TWI763860B - Infrared and visible region light control apparatus - Google Patents

Infrared and visible region light control apparatus

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Publication number
TWI763860B
TWI763860B TW107118962A TW107118962A TWI763860B TW I763860 B TWI763860 B TW I763860B TW 107118962 A TW107118962 A TW 107118962A TW 107118962 A TW107118962 A TW 107118962A TW I763860 B TWI763860 B TW I763860B
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light
region
polarizing plate
infrared
phase
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TW107118962A
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Chinese (zh)
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TW201908780A (en
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望月典明
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日商日本化藥股份有限公司
日商寶來技術有限公司
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)

Abstract

The present invention provides a light control apparatus which makes it possible to emit light in the infrared region and light in the visible region at the time of incidence as different polarized lights on the detected side, and to control the light amount by these polarized lights.
Specifically, the present invention provides a light control apparatus comprising: at least one polarizing plate having polarization performance with respect to light of the infrared region, at least one polarizing plate having polarization performance with respect to light of the visible region, and a medium having phase or a phase controllable medium; wherein, the light control apparatus controls the transmitted light of the infrared region and the transmitted light of the visible region by making the incident light of the infrared region and the light of the visible region into different polarized lights, respectively.

Description

紅外光區域及可見光區域之光控制裝置 Light control device for infrared light region and visible light region

本發明係關於控制紅外光區域及可見光區域的光之光控制裝置。 The present invention relates to a light control device for controlling light in an infrared light region and a visible light region.

具有光的穿透/遮蔽功能的偏光板與具有光的開關功能的液晶一起被使用於液晶顯示器(Liquid Crystal Display；LCD)等顯示裝置。該LCD的應用領域可舉例如從早期的計算機及時鐘等小型機器到筆記型個人電腦、文書處理器、液晶投影機、液晶電視、行車導航器及屋內外的資訊顯示裝置、量測機器等。而且，也可應用於具有偏光功能的透鏡，有對於提高辨識性的太陽眼鏡、近年來對應3D電視等的偏光眼鏡等的應用。 A polarizing plate having a light penetration/shielding function is used in a display device such as a liquid crystal display (LCD) together with a liquid crystal having a light switching function. Application fields of the LCD include small devices such as early computers and clocks, notebook personal computers, word processors, LCD projectors, LCD TVs, car navigation devices, indoor and outdoor information display devices, and measurement devices. Furthermore, it is also applicable to lenses having a polarizing function, and there are applications to sunglasses for improving visibility, polarized glasses for 3D TVs and the like in recent years, and the like.

一般的偏光板，係使得經延伸配向的聚乙烯醇或其衍生物的膜、或者藉由聚氯乙烯膜的去鹽酸或聚乙烯醇系膜的脫水而生成聚烯並配向的聚烯系膜等偏光膜基材，染色或含有碘、二色性染料作為偏光元件而製造。該等之中，使用碘作為偏光元件的碘系偏光膜，雖然偏光性能佳，但對水及熱都很弱，在高溫、高濕的狀態下長時 間使用的情況，其耐久性有問題。另一方面，使用二色性染料作為偏光元件的染料系偏光膜，與碘系偏光膜相比，雖然耐濕性及耐熱性佳，但一般而言偏光性能不足。換言之，是對以可見光波長區域為對象的波長具有偏光功能的偏光板，而不是以紅外光波長區域為對象的偏光板。 A general polarizing plate is a film of polyvinyl alcohol or its derivatives that has been stretched and aligned, or a polyolefin-based film in which polyolefin is formed and aligned by removing hydrochloric acid of a polyvinyl chloride film or dehydrating a polyvinyl alcohol-based film. Equal polarizing film base material, dyed or containing iodine, dichroic dye as polarizing element and manufactured. Among these, iodine-based polarizing films using iodine as a polarizing element have excellent polarizing performance, but are weak against water and heat, and have problems in their durability when used for a long time under high temperature and high humidity. On the other hand, a dye-based polarizing film using a dichroic dye as a polarizing element has better moisture resistance and heat resistance than an iodine-based polarizing film, but generally has insufficient polarizing performance. In other words, it is a polarizing plate having a polarizing function for wavelengths targeting the visible light wavelength region, not a polarizing plate targeting the infrared wavelength region.

近年來，在以觸控面板為對象的識別光源、預防犯罪監視攝影機、感測器、防止偽造、通訊設備等的用途，不僅要求以可見光區域波長為對象的偏光板，也要求可使用於紅外光區域的偏光板。對於如此的期望，已有報告如專利文獻1之將碘系偏光板聚烯化而成的紅外光偏光板、如專利文獻2或3的應用了線柵的紅外光偏光板、如專利文獻4的將包含微粒子的玻璃延伸而成的紅外光偏光片、如專利文獻5或6的使用膽固醇液晶的類型。於專利文獻1中，耐久性弱，耐熱性、濕熱耐久性及耐光性弱，導致不實用。如專利文獻2或3的線柵型，也可加工為薄膜型且同時由於作為產品安定，故逐漸普及化。但是，由於表面沒有奈米級的凹凸時無法維持光學特性，故不能接觸表面，所以其使用的用途受限，甚至於抗反射、抗眩(antiglare)加工困難。如專利文獻4的包含微粒子的玻璃延伸型，由於具有高耐久性且具有高二色性，以致有實用性。但是，因為是包含微粒子且延伸的玻璃，故元件本身容易破裂、易碎，且沒有如傳統的偏光板的柔軟性，因而有表面加工、與其他基板的貼合困難的問題。專利文獻5及專利文獻6的技術，係使用從以前就揭露的圓偏光的技術， 但顏色會隨視角改變，基本上為利用反射的偏光板，故不易形成雜散光、絕對偏光的光。換言之，沒有如一般的碘系偏光板這樣屬於吸收型偏光元件並且為薄膜型而有柔軟性且具有高耐久性的對應紅外光波長區域的偏光板。此外，甚至僅具有紅外光區域的偏光板的功能，而非可控制可見光區域的偏光者。 In recent years, in applications such as identification light sources for touch panels, crime prevention surveillance cameras, sensors, anti-counterfeiting, and communication equipment, polarizers that can be used not only for wavelengths in the visible light region, but also for infrared Polarizers for light areas. In response to such expectations, there have been reports such as an infrared polarizing plate obtained by polyalkylating an iodine-based polarizing plate such as Patent Document 1, an infrared polarizing plate using a wire grid such as Patent Document 2 or 3, and Patent Document 4. The infrared light polarizer obtained by extending glass containing fine particles, such as the type using cholesteric liquid crystals in Patent Documents 5 and 6. In Patent Document 1, the durability is weak, and the heat resistance, wet heat durability, and light resistance are weak, so that it is not practical. Like the wire grid type of Patent Document 2 or 3, it can be processed into a thin film type, and at the same time, it is stable as a product, so it is gradually popularized. However, since the optical properties cannot be maintained without nano-level concavities and convexities on the surface, it cannot be in contact with the surface, so its use is limited, and even anti-reflection and antiglare processing are difficult. The stretched glass type containing fine particles as in Patent Document 4 has high durability and high dichroism, so it is practical. However, since it is an extended glass containing fine particles, the element itself is easily broken and fragile, and it does not have the flexibility of a conventional polarizer, so there are problems in surface processing and bonding with other substrates. The technologies of Patent Document 5 and Patent Document 6 use the conventionally disclosed circularly polarized light, but the color changes depending on the viewing angle, and basically uses a reflective polarizer, so stray light and absolutely polarized light are not easily formed. In other words, there is no polarizing plate corresponding to the infrared wavelength region, which is an absorption-type polarizing element like a general iodine-based polarizing plate, is a thin film type, has flexibility, and has high durability. In addition, even only the function of a polarizer in the infrared light region, rather than a polarizer that can control the visible light region.

所以，至今縱使可分別控制紅外光區域的偏光及可見光區域的偏光，但尚無可同時控制各區域的偏光的光的偏光板。 Therefore, even if the polarization of the infrared light region and the polarization of the visible light region can be controlled separately, there is no polarizing plate that simultaneously controls the polarized light of each region.

此外，可在可見光與紅外光之間切換並分別獨立地開關的元件並不存在。 Furthermore, there is no element that can switch between visible light and infrared light and switch each independently.

[專利文獻1]US 2,494,686號說明書 [Patent Document 1] US 2,494,686 specification

[專利文獻2]日本特開2016-148871號公報 [Patent Document 2] Japanese Patent Laid-Open No. 2016-148871

[專利文獻3]日本特表2006-507517號公報 [Patent Document 3] Japanese Patent Publication No. 2006-507517

[專利文獻4]日本特開2004-86100號公報 [Patent Document 4] Japanese Patent Laid-Open No. 2004-86100

[專利文獻5]國際公開第2015/087709號公報 [Patent Document 5] International Publication No. 2015/087709

[專利文獻6]日本特開2013-064798號公報 [Patent Document 6] Japanese Patent Laid-Open No. 2013-064798

[非專利文獻1]偏光及其應用、共立出版社、第2章(p14-30) [Non-Patent Document 1] Polarized light and its applications, Kyoritsu Press, Chapter 2 (p14-30)

本案係以提供能以使入射的紅外光區域的 波長的光與可見光區域的波長的光同時分別成為不同的偏光的光之方式控制之光控制裝置為目的。 The object of the present invention is to provide a light control device which can be controlled so that incident light with wavelengths in the infrared light region and light with wavelengths in the visible light region become light with different polarizations at the same time.

本案又以提供可控制入射的紅外光區域的偏光與可見光區域的偏光同時成為各區域的偏光的光之光學控制為目的。此外，以提供從相同光源的紅外光區域的光與可見光區域的光，在被檢測側，可在紅外光區域與可見光區域的各區域切換並控制光量的光學系統，亦即可動態切換而開關可見光與紅外光的元件為目的。 The present invention also aims to provide optical control of light that can control the polarized light in the incident infrared light region and the polarized light in the visible light region to become polarized light in each region at the same time. In addition, in order to provide light in the infrared light region and light in the visible light region from the same light source, on the detected side, an optical system that can switch between the infrared light region and the visible light region and control the amount of light, that is, it can be dynamically switched and switched. For visible light and infrared light components.

本發明人等，為了解決上述課題，持續專心研究的結果，發現藉由使用具有相位的介質或可控制相位的介質並且控制紅外光區域的光與可見光區域的光分別成為不同的偏光的光，而入射時的紅外光區域的光的偏光與入射時的可見光區域的光的偏光，在被檢測側，可在紅外光區域與可見光區域分別射出不同的偏光。 The inventors of the present invention, as a result of continuous intensive research in order to solve the above-mentioned problems, found that by using a medium having a phase or a medium that can control the phase and controlling the light in the infrared light region and the light in the visible light region to be light of different polarizations, respectively, On the detection side, the polarization of light in the infrared light region and the polarization of light in the visible light region can be respectively emitted in the infrared light region and the visible light region.

此外，本發明人等，發現一種光控制裝置，係同時使用可見光區域的光及紅外光區域的光，並且具備對紅外光區域的光具有偏光性能的至少1個偏光板及對可見光區域的光具有偏光性能的至少1個偏光板，其中，藉由可動態控制相位的介質，可控制紅外光區域的穿透光的量及可見光區域的穿透光的量，並可作為紅外光區域的光與可見光區域的光的開關元件而發揮功能。並且，又發現一種光學系統，即使使用相同光源，入射時的紅外光區域的光量與可見光區域的光量，在被檢測側，可在紅外光區 域與可見光區域的各區域切換而控制光量。 In addition, the inventors of the present invention have found a light control device that uses both light in the visible light region and light in the infrared light region, and includes at least one polarizing plate having polarization properties for the light in the infrared light region and light in the visible light region. At least one polarizing plate with polarizing properties, wherein the amount of transmitted light in the infrared light region and the amount of transmitted light in the visible light region can be controlled by the medium that can dynamically control the phase, and can be used as the light in the infrared light region. It functions as a switching element for light in the visible light region. In addition, an optical system has been found that can control the amount of light by switching between the infrared light region and the visible light region on the detected side, even if the same light source is used.

亦即，本發明的主要構成係如以下所示。 That is, the main structure of this invention is as follows.

1) 1)

一種光控制裝置，係包括對紅外光區域的光具有偏光性能的至少一個偏光板(IR偏光板)、對可見光區域的光具有偏光性能的至少一個偏光板(VIS偏光板)及具有相位的介質或可控制相位的介質，其中，藉由使入射的紅外光區域的光與可見光區域的光分別成為不同的偏光的光而控制紅外光區域的穿透光及可見光區域的穿透光。 A light control device, comprising at least one polarizer (IR polarizer) with polarizing properties for light in the infrared region, at least one polarizer (VIS polarizer) with polarizing properties for light in the visible region, and a medium having a phase Or a phase-controllable medium, in which the transmitted light in the infrared region and the transmitted light in the visible region are controlled by making incident light in the infrared region and light in the visible region respectively polarized light differently.

2) 2)

如1)所記載的光控制裝置，其中，具有相位的介質或可控制相位的介質之顯示相位差值Rλ時的角度與在紅外光區域顯現直線偏光時的角度之間的角度θi為0≦θi<180°的範圍。 The light control device according to 1), wherein the angle θi between the angle at which the phase-having medium or the phase-controllable medium shows the phase difference value Rλ and the angle at which linearly polarized light appears in the infrared light region is 0≦ The range of θi<180°.

3) 3)

如1)或2)所記載的光控制裝置，其中，具有相位的介質或可控制相位的介質之顯示相位差值Rλ的角度與在可見光區域顯現直線偏光時的角度之間的角度θv為-90°<θv<180°的範圍。 The light control device according to 1) or 2), wherein the angle θv between the angle at which the phase-having medium or the phase-controllable medium exhibits the phase difference value Rλ and the angle at which linearly polarized light appears in the visible light region is − The range of 90°<θv<180°.

4) 4)

如1)至3)中任一項所記載的光控制裝置，其中，在將紅外光區域的光的波長設為Iλ、可見光區域的光的波長設為Vλ、相位差值的誤差設為RD、具有相位的介質或可控制相位的介質的相位差值設為Rλ的情況，分別滿足下述 數學式(1)或數學式(2)的關係；Vλ-RD≦Rλ≦Vλ+RD 數學式(1)(但是，RD表示0至40nm) The light control device according to any one of 1) to 3), wherein the wavelength of light in the infrared light region is Iλ, the wavelength of light in the visible light region is Vλ, and the error of the retardation value is RD . When the phase difference value of a medium with a phase or a medium with a controllable phase is set as Rλ, the relationship between the following mathematical formula (1) or mathematical formula (2) is respectively satisfied; Vλ-RD≦Rλ≦Vλ+RD The mathematical formula (1) (However, RD means 0 to 40 nm)

Iλ/2-RD≦Rλ≦Iλ/2+RD 數學式(2)(但是，RD表示0至40nm)。 Iλ/2-RD≦Rλ≦Iλ/2+RD Mathematical formula (2) (however, RD represents 0 to 40 nm).

5) 5)

如1)至3)中任一項所記載的光控制裝置，其中，在將紅外光區域的光的波長設為Iλ、可見光區域的光的波長設為Vλ、相位差值的誤差設為RD、具有相位的介質或可控制相位的介質的相位差值設為Rλ的情況，分別滿足下述數學式(3)或數學式(4)的關係；Vλ/2-RD≦Rλ≦Vλ/2+RD 數學式(3)(但是，RD表示0至40nm) The light control device according to any one of 1) to 3), wherein the wavelength of light in the infrared light region is Iλ, the wavelength of light in the visible light region is Vλ, and the error of the retardation value is RD . When the phase difference value of a medium with a phase or a medium with a controllable phase is set to Rλ, the relationship between the following mathematical formula (3) or mathematical formula (4) is respectively satisfied; Vλ/2-RD≦Rλ≦Vλ/2 +RD Mathematical formula (3) (however, RD means 0 to 40nm)

Iλ/4-RD≦Rλ≦Iλ/4+RD 數學式(4)(但是，RD表示0至40nm)。 Iλ/4-RD≦Rλ≦Iλ/4+RD Mathematical formula (4) (however, RD represents 0 to 40 nm).

6) 6)

如1)至3)中任一項所記載的光控制裝置，其中，在將紅外光區域的光的波長設為Iλ、可見光區域的光的波長設為Vλ、相位差值的誤差設為RD、具有相位的介質或可控制相位的介質的相位差值設為Rλ的情況，分別滿足下述數學式(5)或數學式(6)的關係；Vλ×3/2-RD≦Rλ≦Vλ×3/2+RD 數學式(5)(但是，RD表示0至40nm) The light control device according to any one of 1) to 3), wherein the wavelength of light in the infrared light region is Iλ, the wavelength of light in the visible light region is Vλ, and the error of the retardation value is RD . When the phase difference value of a medium with a phase or a medium with a controllable phase is set to Rλ, the relationship between the following mathematical formula (5) or mathematical formula (6) is respectively satisfied; Vλ×3/2-RD≦Rλ≦Vλ ×3/2+RD Mathematical formula (5) (however, RD means 0 to 40nm)

Iλ×1/2-RD≦Rλ≦Iλ×1/2+RD 數學式(6) (但是，RD表示0至40nm)。 Iλ×1/2-RD≦Rλ≦Iλ×1/2+RD Mathematical formula (6) (However, RD represents 0 to 40 nm).

7) 7)

一種光控制裝置，其係用以同時控制可見光區域的光與紅外光區域的光的如1)至6)中任一項所記載的光控制裝置，其中，前述可控制相位的介質為可動態控制相位的介質。 A light control device, which is the light control device described in any one of 1) to 6) for simultaneously controlling the light in the visible light region and the light in the infrared light region, wherein the aforementioned phase-controllable medium is a dynamic The medium that controls the phase.

8) 8)

如7)所記載的光控制裝置，其中，前述可動態控制相位的介質為液晶面板(液晶胞)。 The light control device according to 7), wherein the medium whose phase can be dynamically controlled is a liquid crystal panel (liquid crystal cell).

9) 9)

如8)所記載的光控制裝置，其中，前述液晶面板(液晶胞)所使用的液晶為扭轉向列型液晶(TN液晶；Twisted Nematic液晶)或超扭轉向列型液晶(STN液晶；Super Twisted Nematic液晶)。 The light control device according to 8), wherein the liquid crystal used in the liquid crystal panel (liquid crystal cell) is a twisted nematic liquid crystal (TN liquid crystal; Twisted Nematic liquid crystal) or a super twisted nematic liquid crystal (STN liquid crystal; Super Twisted liquid crystal). Nematic LCD).

10) 10)

如7)至9)中任一項所記載的光控制裝置，其中，可見光區域的光與紅外光區域的光各自的穿透對不穿透的對比度為10以上。 The light control device according to any one of 7) to 9), wherein the contrast ratio of transmission to non-transmission of light in the visible light region and light in the infrared light region is 10 or more.

11) 11)

如7)至9)中任一項所記載的光控制裝置，係包含對可見光區域的光與紅外光區域的光具有偏光性能的1個偏光板(VIS-IR偏光板)。 The light control device according to any one of 7) to 9), comprising one polarizing plate (VIS-IR polarizing plate) having polarization properties for light in the visible light region and light in the infrared light region.

12) 12)

如11)所記載的光控制裝置，其中，於前述VIS-IR偏 光板中，紅外光區域的光的直交穿透率與可見光區域的光的直交穿透率的差為1%以下。 The light control device according to 11), wherein, in the VIS-IR polarizing plate, the difference between the orthogonal transmittance of light in the infrared light region and the orthogonal transmittance of light in the visible light region is 1% or less.

13) 13)

如1)至12)中任一項所記載的光控制裝置，其中，於前述IR偏光板中，紅外光區域的光的直交穿透率與可見光區域的光的直交穿透率的差為10%以上。 The light control device according to any one of 1) to 12), wherein in the IR polarizing plate, the difference between the orthogonal transmittance of light in the infrared light region and the orthogonal transmittance of light in the visible light region is 10 %above.

14) 14)

如1)至13)中任一項所記載的光控制裝置，係包括：於前述IR偏光板中紅外光區域的光的直交穿透率為1%以下且與可見光區域的光的穿透率的差為10%以上之偏光板；以及前述VIS偏光板在紅外光區域顯示高穿透率、顯示紅外光區域的光的穿透不易受影響且可見光區域的光的直交穿透率為1%以下的至少1個偏光板。 The light control device according to any one of 1) to 13), comprising: the orthogonal transmittance of light in the infrared light region in the IR polarizing plate is 1% or less and the transmittance of light in the visible light region Polarizing plates with a difference of more than 10%; and the aforementioned VIS polarizing plate shows high transmittance in the infrared light region, shows that the penetration of light in the infrared light region is not easily affected, and the orthogonal transmittance of light in the visible light region is 1%. At least one of the following polarizers.

15) 15)

如1)至14)中任一項所記載的光控制裝置，其中，前述IR偏光板或前述VIS-IR偏光板為吸收型偏光板。 The light control device according to any one of 1) to 14), wherein the IR polarizing plate or the VIS-IR polarizing plate is an absorption-type polarizing plate.

16) 16)

如1)至15)中任一項所記載的光控制裝置，其中前述IR偏光板或前述VIS-IR偏光板為膜。 The light control device according to any one of 1) to 15), wherein the IR polarizing plate or the VIS-IR polarizing plate is a film.

17) 17)

如1)至16)中任一項所記載的光控制裝置，其係積層有具有相位差的介質或可控制相位的介質與至少1個偏光板。 The light control device according to any one of 1) to 16), wherein a medium having a phase difference or a phase controllable medium and at least one polarizing plate are laminated.

18) 18)

一種液晶顯示裝置、防偽裝置或感測器，係具備如1)至17)中任一項所記載的光控制裝置。 A liquid crystal display device, an anti-counterfeiting device or a sensor, comprising the light control device according to any one of 1) to 17).

藉由本發明，可將入射時的紅外光區域的光及可見光區域的光在被檢測側分別以不同的偏光射出，且可藉由該等偏光來控制光量。 According to the present invention, the incident light in the infrared region and the light in the visible region can be emitted with different polarizations on the detected side, and the amount of light can be controlled by these polarizations.

於一態樣中，藉由本發明，從相同光源的入射時的紅外光區域的光量與可見光區域的光量，在被檢測側，紅外光區域的光與可見光區域的光在各區域切換成為穿透或不穿透，而可控制各自的光量。 In one aspect, according to the present invention, the light intensity of the infrared light region and the light intensity of the visible light region at the time of incidence from the same light source are switched to transmit light in each region on the detected side. Or not penetrate, but can control the amount of light of each.

本發明的光控制裝置，係包括對紅外光區域的光具有偏光性能的至少一個偏光板(IR偏光板)、對可見光區域的光具有偏光性能的至少一個偏光板(VIS偏光板)及具有相位的介質或可控制相位的介質，其中，藉由使入射的紅外光區域的光與可見光區域的光分別成為不同的偏光的光而控制紅外光區域的穿透光及可見光區域的穿透光。 The light control device of the present invention includes at least one polarizing plate (IR polarizing plate) having polarization properties for light in the infrared region, at least one polarizing plate (VIS polarizing plate) having polarization properties for light in the visible region, and a phase polarizing plate. A medium or a phase-controllable medium, in which the transmitted light in the infrared region and the transmitted light in the visible region are controlled by making incident light in the infrared region and light in the visible region different polarized lights, respectively.

於一態樣中，本發明的光控制裝置，係包含可見光區域的光與紅外光區域的光同時入射時可動態控制相位的介質，其中藉由控制紅外光區域的光與可見光區域的光分別成為不同的偏光的光而控制紅外光區域的穿透 光及可見光區域的穿透光。 In one aspect, the light control device of the present invention includes a medium that can dynamically control the phase when light in the visible light region and light in the infrared light region are simultaneously incident, wherein the light in the infrared light region and the light in the visible light region are controlled separately. The transmitted light in the infrared region and the transmitted light in the visible light region are controlled as light of different polarizations.

上述IR偏光板，若是在紅外光區域的波長中可控制偏光的偏光板，則無特別限制。該偏光板可舉例如：如專利文獻1的應用碘系偏光板的聚烯型、如專利文獻2、專利文獻3的線柵型偏光板、如專利文獻4的玻璃中混合金屬粒子並延伸的玻璃偏光板、包含染料的染料系偏光板等，於本案中較佳使用染料系偏光板。該染料系偏光板，可成為膜形態，容易與其他偏光板、相位差板等積層，具有可撓性且光學控制容易之特點。 The above-mentioned IR polarizing plate is not particularly limited as long as it is a polarizing plate capable of controlling polarization in the wavelength of the infrared light region. The polarizing plate includes, for example, a polyene type polarizer using an iodine-based polarizing plate such as Patent Document 1, a wire grid polarizing plate such as Patent Document 2 and Patent Document 3, and a glass that is mixed with metal particles and stretched as described in Patent Document 4. A glass polarizing plate, a dye-based polarizing plate containing a dye, etc., in this case, a dye-based polarizing plate is preferably used. The dye-based polarizing plate can be in the form of a film, and can be easily laminated with other polarizing plates, retardation plates, etc., and has the characteristics of flexibility and easy optical control.

上述IR偏光板，對700至1400nm的一部分或全部的波長區域的光具有偏光性能。 The above-mentioned IR polarizing plate has polarization performance with respect to light in a part or all of the wavelength region of 700 to 1400 nm.

所謂上述VIS偏光板，若是在可見光區域的波長中可控制偏光的偏光板，則無特別限制。該偏光板雖可為例如碘系偏光板、染料系偏光板、只可將特定波長控制偏光的染料系偏光板、利用聚烯之類型的偏光板等，但較佳係只可將特定波長控制偏光的染料系偏光板或將複數種類的只可將特定波長偏光的染料系偏光板組合來作為只可將特定波長控制偏光的偏光元件。藉由只對特定波長的光具備偏光性能，可檢測或控制在特定波長的偏光，所以較佳。 The above-mentioned VIS polarizing plate is not particularly limited as long as it is a polarizing plate that can control polarization in the wavelength of the visible light region. Although the polarizing plate can be, for example, an iodine-based polarizing plate, a dye-based polarizing plate, a dye-based polarizing plate that can only control polarized light at a specific wavelength, a type of polarizing plate that uses polyene, etc., but preferably only a specific wavelength can be controlled. A polarized dye-based polarizing plate or a combination of plural types of dye-based polarizing plates capable of polarizing only a specific wavelength is used as a polarizing element capable of controlling polarization only for a specific wavelength. It is preferable that polarized light at a specific wavelength can be detected or controlled by having the polarization property only for light of a specific wavelength.

上述VIS偏光板，對400至700nm的一部分或全部的波長區域的光具有偏光性能。較佳係紅外光區域的穿透率高且不具有吸收，若紅外光區域的光比可見光穿透率高，則無特別限制。所謂「不具有吸收」係指在紅 外光區域具有高穿透率，且不易影響紅外光區域的光的穿透，但通常一般的偏光板的單體穿透率為30至45%，故在紅外光區域的各波長具有與其相同程度以上的單體穿透率的情況，具有紅外光的穿透功能的偏光板，可使用來作為本案的可見光(VIS)偏光板。具體而言，紅外光區域的穿透率為40%以上，較佳為50%以上，更佳為60%以上，再更佳為70%以上，特佳為80%以上。特別是在2片VIS偏光板直交時的紅外光區域的穿透率為30%以上，較佳為40%以上，更佳為50%以上，再更佳為60%以上，特佳為70%以上，可使用來作為特佳的VIS偏光板。 The above-mentioned VIS polarizing plate has a polarization property for light in a part or all of the wavelength region of 400 to 700 nm. Preferably, the transmittance in the infrared light region is high and there is no absorption. If the light transmittance in the infrared light region is higher than that of the visible light, there is no particular limitation. The so-called "non-absorbing" means that it has high transmittance in the infrared light region, and is not easy to affect the light penetration in the infrared light region, but generally the transmittance of a common polarizer is 30 to 45%. In the case where each wavelength in the infrared light region has a single transmittance of the same level or more, a polarizing plate having a function of transmitting infrared light can be used as the visible light (VIS) polarizing plate of this application. Specifically, the transmittance of the infrared light region is 40% or more, preferably 50% or more, more preferably 60% or more, still more preferably 70% or more, and particularly preferably 80% or more. Especially when the two VIS polarizers are perpendicular to each other, the transmittance of the infrared light region is above 30%, preferably above 40%, more preferably above 50%, still more preferably above 60%, particularly preferably above 70% As mentioned above, it can be used as an excellent VIS polarizer.

上述具有相位的介質，可舉例如被稱為相位差板、波長板、相位差膜者等。 The above-mentioned medium having a phase is, for example, called a retardation plate, a wave plate, a retardation film, or the like.

而且，可控制相位的介質，可舉例如一般液晶監視器等所使用的封入液晶的可藉由電等來控制相位的液晶面板(液晶胞)等。 Moreover, as a medium which can control a phase, the liquid crystal panel (liquid crystal cell) etc. which can control a phase by electricity etc. which are used for general liquid crystal monitors etc. which enclose a liquid crystal are mentioned, for example.

此處，所謂「可控制相位」係指可控制作為波的光的相位。在著眼於偏光性能的情況，例如波長板、可控制相位的介質等(波長板等)係對直線偏光的光賦予既定的相位差的光學功能元件，偏光可對於特定的軸的光而言，在其他軸(例如90°)設置不同的相位。亦即，對於一個偏光的光，藉由在其光路徑上設置波長板等，而成為其相反軸的偏光，或可新賦予圓偏光、橢圓偏光等。所以，波長板等係指可藉由利用已配向的雙折射材料(例如延伸膜)等對直交的2個偏光成分賦予相位差而改變入射光的偏光 的狀態的元件。該波長板等，例如在將特定的光的波長設為λ的情況，藉由將其λ/2的相位差板的慢軸設置為相對於偏光的軸成45°，可使入射波長板等的直線偏光旋轉90°，並射出在與入射的偏光軸直交(90°)方向具有偏光軸的偏光。而且，藉由將λ/2的相位差板的慢軸設置為相對於偏光的軸成22.5°，可使入射波長板(相位差板)的直線偏光旋轉45°，並射出具有與入射的偏光軸傾斜45°的偏光的光。再者，於將λ/4的相位差板的慢軸設置為相對於偏光的軸成45°的情況，可使入射波長板(相位差板)的直線偏光以圓偏光射出。 Here, the "controllable phase" means that the phase of light as a wave can be controlled. In the case of focusing on polarization performance, for example, wavelength plates, phase-controllable media (wave plates, etc.) are optical functional elements that impart a predetermined phase difference to linearly polarized light, and polarized light can be used for light of a specific axis. Set a different phase in other axes (eg 90°). That is, for light of one polarized light, by providing a wavelength plate or the like on the light path, it becomes polarized light of the opposite axis, or circularly polarized light, elliptical polarized light, or the like can be newly provided. Therefore, a wavelength plate or the like refers to an element that can change the polarization state of incident light by imparting a retardation to two orthogonal polarization components using an oriented birefringent material (for example, a stretched film). This wavelength plate or the like can be incident on the wavelength plate or the like by setting the slow axis of the λ/2 retardation plate at 45° with respect to the axis of polarization when, for example, the wavelength of a specific light is set to λ. The linearly polarized light is rotated by 90°, and polarized light having a polarization axis in a direction orthogonal (90°) to the incident polarization axis is emitted. Furthermore, by setting the slow axis of the λ/2 retardation plate at 22.5° with respect to the axis of the polarized light, the linearly polarized light of the incident wavelength plate (retardation plate) can be rotated by 45°, and the incident polarized light can be emitted. Polarized light with an axis tilted by 45°. Furthermore, when the slow axis of the λ/4 retardation plate is set at 45° with respect to the axis of polarization, linearly polarized light incident on the wavelength plate (retardation plate) can be emitted as circularly polarized light.

可使用上述相位差板、波長板、相位差膜者，若是可使膜的光的慢軸或快軸相對於偏光板的吸收軸而言進行旋轉者，則無特別限制。 The above-mentioned retardation plate, wave plate, and retardation film can be used, and there is no particular limitation as long as the slow axis or fast axis of light of the film can be rotated with respect to the absorption axis of the polarizing plate.

可控制相位的液晶面板(液晶胞)係電控制相位的介質。控制的液晶驅動方式，有TN(Twisted Nematic；扭轉向列型)、STN(Super Twisted Nematic；超扭轉向列型)、IPS(In-Plane-Switiching；平面轉換型)、VA(Vertical Alignment；垂直配向型)等各種方式，但若是可控制可見光區域的光與紅外光區域的光的相位之液晶及控制方法，則無特別限制。較佳可舉例如TN(Twisted Nematic；扭轉向列型)、STN(Super Twisted Nematic；超扭轉向列型)等。該等因驅動電壓低、價格便宜且容易控制0至90°的偏光旋轉，所以較佳。 The phase-controllable liquid crystal panel (liquid crystal cell) is a medium that electrically controls the phase. Controlled liquid crystal driving methods include TN (Twisted Nematic; twisted nematic), STN (Super Twisted Nematic; super twisted nematic), IPS (In-Plane-Switching; plane switching), VA (Vertical Alignment; vertical) Alignment type) and other methods, but there are no particular limitations on the liquid crystal and the control method that can control the phases of light in the visible light region and light in the infrared light region. Preferable examples include TN (Twisted Nematic; twisted nematic), STN (Super Twisted Nematic; super twisted nematic), and the like. These are preferred because the driving voltage is low, the price is cheap, and the polarization rotation of 0 to 90° can be easily controlled.

上述光控制裝置，藉由具有相位的介質或 可控制相位的介質而控制紅外光區域的光及可見光區域的光分別成為不同的偏光的光。藉此，入射時的紅外光區域的光的偏光與入射時的可見光區域的光的偏光，分別在被檢測側，可感測為不同的偏光。具體而言，藉由將人眼可辨識的可見光區域的光及辨識困難的紅外光區域的光分別同時控制偏光，可同時調整可見光區域的光及紅外光區域的光的光量，可在將可見光區域的光控制為穿透或不穿透的同時使紅外光區域的光持續穿透。而且，也可進行與此相反的控制，換言之，可在將紅外光區域的光控制為穿透或不穿透的同時使可見光區域的光持續穿透，可提供可同時控制可見光區域的光及紅外光區域的光各自的偏光、光量的光控制裝置。 In the above-mentioned light control device, the light in the infrared light region and the light in the visible light region are controlled to be light of different polarizations, respectively, by a medium having a phase or a medium capable of controlling the phase. Thereby, the polarization of light in the infrared light region when incident and the polarization of light in the visible light region when incident can be sensed as different polarized lights on the detection side, respectively. Specifically, by controlling the polarization of the light in the visible light region that can be recognized by the human eye and the light in the infrared light region that is difficult to recognize, the amount of light in the visible light region and the light in the infrared light region can be adjusted at the same time. The light in the area is controlled to be penetrating or not penetrating while the light in the infrared light area is continuously penetrated. In addition, the reverse control can also be performed. In other words, the light in the visible light region can be continuously transmitted while the light in the infrared light region is controlled to pass through or not pass through, and the light and A light control device for each polarization and light intensity of light in the infrared light region.

以往，紅外光感測器及可見光攝影機，在紅外光區域的光的感測及可見光區域的光的感測，必須分別使用不同種的感測器，但藉由使用本發明的裝置，紅外線感測器及可見光攝影機可由1個光控制裝置來控制。例如手機等的攝影機，一般在紅外光區域用的認證攝影機及可見光區域用的攝影機必須有分別的光控制裝置，但藉由使用上述光控制裝置，因可切換可見光區域的光與紅外光區域的光的穿透或不穿透，故紅外光區域認證與可見光區域照相攝影等可使用1個光控制裝置來進行。再者，藉由應用該光控制裝置，也可應用在高度保全等。而且，由於可為光穿透型裝置、紅外光至可見光區域的圓偏光控制及直線偏光控制等，故藉由應用該等，也可應用於例如應用 光反射偏光功能的裝置、保全用途等。 In the past, infrared light sensors and visible light cameras had to use different types of sensors for sensing light in the infrared light region and light sensing in the visible light region, but by using the device of the present invention, infrared light sensing The detector and visible light camera can be controlled by a light control device. For example, cameras such as mobile phones, generally require separate light control devices for authentication cameras in the infrared light region and cameras in the visible light region. However, by using the above light control devices, the light in the visible light region and the infrared light region can be switched. Light penetration or non-penetration, so infrared light area authentication and visible light area photography, etc. can be performed with a single light control device. Furthermore, by applying this light control device, it can be applied to high security and the like. In addition, since it can be a light-transmitting device, circular polarization control and linear polarization control of infrared light to visible light region, etc., by applying these, it can also be applied to, for example, a device applying a light reflection polarization function, a security application, and the like.

於一態樣中，較佳係一種光控制裝置，其中，具有相位的介質或可控制相位的介質(相位差板)的顯現相位差值Rλ時的角度(入射光的相位)與在紅外光區域顯現(射出)直線偏光時的角度(射出光的相位)之間的角度(相位差)θi為0≦θi<180°的範圍。上述角度θi為0°的情況，換言之在同軸設置的情況，紅外光區域的偏光不受相位差板的影響或變成不易接收的光，而且於設置λ/2的相位差值的相位差板的情況，藉由將上述角度θi設置為45°，可射出具有與入射的直線偏光呈反轉90°的相反軸的偏光。 In one aspect, it is preferably a light control device, wherein the angle (phase of incident light) at which the medium with phase or the medium (retardation plate) that can control the phase shows the phase difference value Rλ is the same as that in infrared light. The angle (phase difference) θi between the angles (phases of the emitted light) when the region develops (emits) linearly polarized light is in the range of 0≦θi<180°. In the case where the above-mentioned angle θi is 0°, in other words, in the case of coaxial arrangement, the polarized light in the infrared light region is not affected by the retardation plate or becomes light that is not easy to receive, and the polarization of the retardation plate with the retardation value of λ/2 is set. In this case, by setting the above-mentioned angle θi to 45°, polarized light having an opposite axis reversed by 90° to the incident linearly polarized light can be emitted.

再者，藉由相位差板的顯現相位差值Rλ時的角度(入射光的相位)與在可見光區域顯現直線偏光時的角度(射出光的相位)之間的角度(相位差)θv為-90°<θv<180°的範圍之光控制裝置，也可控制可見光區域的相位差。θv與θi可為相同，亦可為不同，可藉由相位差板控制特定波長的光的偏光狀態即可。換言之，所使用的相位差板的片數不限於1片，如一般的液晶顯示器是組合使用1/4λ板、1/2λ板等，於本發明的光控制裝置中也可使用複數個相位差板。 Furthermore, the angle (phase difference) θv between the angle at which the retardation value Rλ is exhibited by the retardation plate (the phase of the incident light) and the angle at which the linearly polarized light is exhibited in the visible light region (the phase of the outgoing light) is − The light control device in the range of 90°<θv<180° can also control the phase difference in the visible light region. θv and θi may be the same or different, and the polarization state of light of a specific wavelength may be controlled by a retardation plate. In other words, the number of retardation plates used is not limited to one. For example, a general liquid crystal display uses a combination of a 1/4λ plate, a 1/2λ plate, etc., and a plurality of retardation plates can also be used in the light control device of the present invention. plate.

在將紅外光區域的光的波長設為Iλ、可見光區域的光的波長設為Vλ、相位差值的誤差設為RD(Retarder Dispersion)、相位差板的相位差值設為Rλ的情況，滿足下述數學式(1)或數學式(2)的關係之光控制裝置， 在可見光區域作為可提供Vλ的相位差板發揮功能，在紅外光區域作為可提供Iλ/2的相位差板發揮功能。 When the wavelength of light in the infrared light region is Iλ, the wavelength of light in the visible light region is Vλ, the error of the retardation value is RD (Retarder Dispersion), and the retardation value of the retardation plate is Rλ, it satisfies The light control device according to the following mathematical formula (1) or mathematical formula (2) functions as a retardation plate that can provide Vλ in the visible light region, and functions as a retardation plate that can provide Iλ/2 in the infrared light region .

Vλ-RD≦Rλ≦Vλ+RD 數學式(1)(但是，RD表示0至40nm) Vλ-RD≦Rλ≦Vλ+RD Equation (1) (However, RD means 0 to 40nm)

Iλ/2-RD≦Rλ≦Iλ/2+RD 數學式(2)(但是，RD表示0至40nm)。 Iλ/2-RD≦Rλ≦Iλ/2+RD Mathematical formula (2) (however, RD represents 0 to 40 nm).

於上述光控制裝置中，在將具有Rλ的相位差板的慢軸設置為相對於入射的直線偏光的光而言為45°的情況，在可見光區域中，持續作為可維持入射時的偏光的光的相位差板發揮功能，在紅外光區域中，藉由作為λ/2偏光板發揮功能，可射出入射偏光軸的逆偏光軸。在將該具有Rλ的相位差板的慢軸設置為相對於入射的直線偏光的光而言為45°的情況，且在射出側設置具有與入射軸直交的吸收軸的偏光板的情況，可提供可穿透可見光區域的光但可吸收紅外光區域的光的光控制裝置。於期望可見光區域的光及紅外光區域的光兩者皆不穿透(吸收)的情況，將具有Rλ的相位差板的慢軸不是設置為45°而是設置為0°即可。如此地，藉由控制滿足上述數學式(1)或數學式(2)的關係的具有Rλ的相位差板的慢軸，也可控制直線偏光的軸及橢圓偏光等。上述RD較佳為0至40nm的範圍，更佳為0至25nm，再更佳為0至15nm，特佳為0至5nm的範圍。使用上述相位的偏光軸的控制，可參考非專利文獻1等來進行。 In the above-mentioned light control device, in the case where the slow axis of the retardation plate having Rλ is set to be 45° with respect to the incident linearly polarized light, in the visible light region, it continues to be the one that can maintain the incident polarized light. The retardation plate of light functions as a λ/2 polarizer in the infrared light region, so that the reverse polarization axis of the incident polarization axis can be emitted. When the slow axis of the retardation plate having Rλ is set to be 45° with respect to the incident linearly polarized light, and a polarizing plate having an absorption axis orthogonal to the incident axis is provided on the output side, it is possible to Provides a light control device that can transmit light in the visible light region but absorb light in the infrared light region. When it is desired that neither light in the visible light region nor light in the infrared light region is transmitted (absorbed), the slow axis of the retardation plate having Rλ may be set to 0° instead of 45°. In this way, by controlling the slow axis of the retardation plate having Rλ that satisfies the relationship of the above equation (1) or equation (2), the axis of linear polarization, elliptical polarization, and the like can also be controlled. The above-mentioned RD is preferably in the range of 0 to 40 nm, more preferably in the range of 0 to 25 nm, still more preferably in the range of 0 to 15 nm, particularly preferably in the range of 0 to 5 nm. The control of the polarization axis using the above-mentioned phase can be performed with reference to Non-Patent Document 1 and the like.

而且，滿足下述數學式(3)或數學式(4)的關 係之光控制裝置，在可見光區域中作為可提供λ/2的相位差板發揮功能，在紅外光區域中作為可提供λ/4的相位差板發揮功能。再者，Iλ、Vλ、RD及Rλ係如同上述的定義。 Furthermore, the light control device satisfying the relationship of the following formula (3) or formula (4) functions as a retardation plate capable of providing λ/2 in the visible light region, and as a retardation plate capable of providing λ/2 in the infrared light region 4 of the retardation plates come into play. Furthermore, Iλ, Vλ, RD and Rλ are as defined above.

Vλ/2-RD≦Rλ≦Vλ/2+RD 數學式(3)(但是，RD表示0至40nm) Vλ/2-RD≦Rλ≦Vλ/2+RD Mathematical formula (3) (However, RD means 0 to 40nm)

Iλ/4-RD≦Rλ≦Iλ/4+RD 數學式(4)(但是，RD表示0至40nm)。 Iλ/4-RD≦Rλ≦Iλ/4+RD Mathematical formula (4) (however, RD represents 0 to 40 nm).

於上述光控制裝置中，在將具有Rλ的相位差板的慢軸設置為直線偏光的光所入射的45°的情況，在可見光區域中，作為λ/2偏光板發揮功能，可射出入射的偏光的光的逆偏光，在紅外光區域中，作為可發揮λ/4偏光板功能之相位差板而發揮功能，可使入射的偏光的光成為圓偏光而射出。藉此，於在射出側設置具有與入射軸直交的吸收軸的偏光板的情況，可見光區域可在維持直線偏光的狀態控制偏光，相對於此，紅外光區域可控制為圓偏光的光。於期望可見光區域的光及紅外光區域的光兩者皆不穿透(吸收)的情況，將具有Rλ的相位差板的慢軸不是設置為45°而是設置為0°即可。如此地，藉由控制滿足上述數學式(3)、數學式(4)的具有Rλ的相位差板的慢軸，也可控制直線偏光的軸及橢圓偏光等。於上述構成的情況，可控制在可見光區域的反射且可控制在紅外光區域的穿透。較佳的構成可為例如可控制可見光區域及紅外光區域的偏光板、具有相位的介質或可控制相位的介質、可控制可見光區域及紅外光區域的偏光板的構成，可例示如可控制可見光區 域及紅外光區域的偏光板、具有相位的介質或可控制相位的介質、可控制可見光區域的偏光板、可控制紅外光區域的偏光板的順序等，不限制構成。再者，使用本方法時，也可做到應用了在紅外光區域中反射的光具有偏光的偏光控制。例如，於在一片偏光板進行反射控制的情況，在紅外光區域中，以偏光板、λ/4相位差板、反射板的順序積層，對於偏光板的吸收軸而言，將相位差板的慢軸設置為直線偏光的光所入射的45°的情況，從偏光板入射光的直線偏光係藉由相位差板而被改變為圓偏光，而且藉由反射板反射的光係被改變為逆圓偏光，結果可顯現可抗反射的功能。但是，於該情況，因可見光區域的光持續維持在直線偏光的狀態，故光被反射，可檢測反射光。再者，即使於該反射使用的情況，藉由相對於紅外光偏光板的吸收軸而言將相位差板的慢軸設置為0°，紅外光區域的偏光維持在直線偏光的狀態，故作為可見光區域的光及紅外光區域的光皆可反射的光控制裝置發揮功能。本光控制裝置的情況，RD宜為0至40nm的範圍，較佳為0至25nm，更佳為0至15nm，特佳為0至5nm的範圍。 In the above-mentioned light control device, when the slow axis of the retardation plate having Rλ is set at 45° to which linearly polarized light is incident, in the visible light region, it functions as a λ/2 polarizing plate and can emit incident light. The reverse polarized light of polarized light functions as a retardation plate that can function as a λ/4 polarizing plate in the infrared region, and can emit incident polarized light as circularly polarized light. Thereby, when a polarizing plate having an absorption axis perpendicular to the incident axis is provided on the emission side, the visible light region can be controlled to maintain linear polarization, whereas the infrared light region can be controlled to circularly polarized light. When it is desired that neither light in the visible light region nor light in the infrared light region is transmitted (absorbed), the slow axis of the retardation plate having Rλ may be set to 0° instead of 45°. In this way, by controlling the slow axis of the retardation plate having Rλ that satisfies the above equations (3) and (4), the axis of linear polarization, elliptical polarization, and the like can also be controlled. In the case of the above configuration, the reflection in the visible light region can be controlled and the penetration in the infrared light region can be controlled. The preferred structure can be, for example, a polarizing plate that can control the visible light region and the infrared light region, a medium with a phase or a medium that can control the phase, and a polarizing plate that can control the visible light region and the infrared light region. Examples such as visible light can be controlled. The order of the polarizers in the region and the infrared region, the medium having a phase or the phase controllable medium, the polarizer capable of controlling the visible region, and the order of the polarizers capable of controlling the infrared region, etc., are not limited to the configuration. Furthermore, when this method is used, polarization control in which the reflected light in the infrared region has polarization can also be applied. For example, in the case of performing reflection control on one polarizing plate, in the infrared light region, a polarizing plate, a λ/4 retardation plate, and a reflecting plate are laminated in this order. Regarding the absorption axis of the polarizing plate, the retardation plate is When the slow axis is set at 45° at which the linearly polarized light is incident, the linearly polarized light system of the incident light from the polarizing plate is changed to circularly polarized light by the retardation plate, and the light system reflected by the reflecting plate is changed to the reversed light system. Circularly polarized light, the result can show the function of anti-reflection. However, in this case, since the light in the visible light region is continuously maintained in the linearly polarized state, the light is reflected and the reflected light can be detected. Furthermore, even in the case of reflection use, by setting the slow axis of the retardation plate to 0° with respect to the absorption axis of the infrared light polarizing plate, the polarization of the infrared light region is maintained in the state of linear polarization, so as A light control device capable of reflecting both light in the visible light region and light in the infrared light region functions. In the case of the light control device, RD is preferably in the range of 0 to 40 nm, preferably 0 to 25 nm, more preferably 0 to 15 nm, and particularly preferably 0 to 5 nm.

而且，滿足下述數學式(5)或數學式(6)的關係之光控制裝置，在可見光區域中作為可提供3/2 λ的相位差板發揮功能，在紅外光區域中作為可提供1/2 λ的相位差板發揮功能。再者，Iλ、Vλ、RD及Rλ係如同上述的定義。 Furthermore, a light control device satisfying the relationship of the following formula (5) or formula (6) functions as a retardation plate capable of providing 3/2λ in the visible light region, and as a retardation plate capable of providing 1 in the infrared light region A retardation plate of /2 λ functions. Furthermore, Iλ, Vλ, RD and Rλ are as defined above.

Vλ×3/2-RD≦Rλ≦Vλ×3/2+RD 數學式(5) (但是，RD表示0至40nm) Vλ×3/2-RD≦Rλ≦Vλ×3/2+RD Equation (5) (However, RD means 0 to 40nm)

Iλ×1/2-RD≦Rλ≦Iλ×1/2+RD 數學式(6)(但是，RD表示0至40nm)。 Iλ×1/2-RD≦Rλ≦Iλ×1/2+RD Mathematical formula (6) (however, RD represents 0 to 40 nm).

於上述光控制裝置中，藉由將具有Rλ的相位差板的慢軸設置為直線偏光的光所入射的45°，在可見光區域中，作為3/2 λ偏光板發揮功能，可射出入射的偏光的光的圓偏光，在紅外光區域中，作為λ/2偏光板而達到作為可將入射的偏光的光在相反軸射出之相位差板發揮功能。藉此，於在射出側設置具有與入射軸直交的吸收軸的偏光板的情況，可見光區域的偏光的光可控制為圓偏光，相對於此，紅外光區域可控制為直線偏光的光。於期望可見光區域的光及紅外光區域的光兩者皆不穿透(吸收)的情況，將具有Rλ的相位差板的慢軸不是設置為45°而是設置為0°即可。如此地，藉由控制滿足上述數學式(5)、數學式(6)的具有Rλ的相位差板的慢軸，也可控制直線偏光的軸及橢圓偏光等。較佳的構成可為例如可控制可見光區域及紅外光區域的偏光板、具有相位的介質或可控制相位的介質、可控制可見光區域及紅外光區域的偏光板的構成，可例示如可控制可見光區域及紅外光區域的偏光板、具有相位的介質或可控制相位的介質、可控制可見光區域的偏光板、可控制紅外光區域的偏光板的順序等，不限制構成。再者，使用本方法時，也可做到應用了在紅外光區域中反射的光具有偏光的偏光控制。於上述構成的情況，可控制在可見光區域的反射，且可控制在紅外光區域的穿透。例 如，於在一片偏光板進行反射控制的情況，在可見光區域中，以偏光板、3/4 λ偏光板、反射板的順序積層，在反射板上以相對於偏光板的吸收軸而言使相位差板的慢軸為45°之方式設置，藉此，從偏光板入射光的直線偏光係藉由相位差板而被改變為圓偏光，而且藉由反射板反射的光係被改變為逆圓偏光，結果可顯現可抗反射的功能。但是，於該情況，因紅外光區域的光持續維持在直線偏光的狀態，故光被反射，可檢測反射光。再者，即使於該反射使用的情況，藉由將相位差板的慢軸設置為0°，而作為可見光區域的光及紅外光區域的光皆可反射的光控制裝置發揮功能。本光控制裝置的情況，RD宜為0至40nm的範圍，較佳為0至25nm，更佳為0至15nm，特佳為0至5nm的範圍。 In the above-mentioned light control device, by setting the slow axis of the retardation plate having Rλ to 45° at which the linearly polarized light is incident, it functions as a 3/2 λ polarizing plate in the visible light region, and can emit incident light. The circularly polarized light of the polarized light functions as a λ/2 polarizing plate in the infrared region and functions as a retardation plate capable of emitting incident polarized light on the opposite axis. Thereby, when a polarizing plate having an absorption axis perpendicular to the incident axis is provided on the emission side, the polarized light in the visible light region can be controlled to be circularly polarized light, while the infrared light region can be controlled to be linearly polarized light. When it is desired that neither light in the visible light region nor light in the infrared light region is transmitted (absorbed), the slow axis of the retardation plate having Rλ may be set to 0° instead of 45°. In this way, by controlling the slow axis of the retardation plate having Rλ that satisfies the above equations (5) and (6), the axis of linear polarization, elliptical polarization, and the like can also be controlled. The preferred structure can be, for example, a polarizing plate that can control the visible light region and the infrared light region, a medium with a phase or a medium that can control the phase, and a polarizing plate that can control the visible light region and the infrared light region. Examples such as visible light can be controlled. The order of the polarizers in the region and the infrared region, the medium having a phase or the phase controllable medium, the polarizer capable of controlling the visible region, and the order of the polarizers capable of controlling the infrared region, etc., are not limited to the configuration. Furthermore, when this method is used, polarization control in which the reflected light in the infrared region has polarization can also be applied. In the case of the above configuration, the reflection in the visible light region can be controlled, and the penetration in the infrared light region can be controlled. For example, in the case of performing reflection control on one polarizing plate, in the visible light region, a polarizing plate, a 3/4 λ polarizing plate, and a reflecting plate are laminated in this order, and the reflecting plate is arranged so as to be relative to the absorption axis of the polarizing plate. The retardation plate is set so that the slow axis is 45°, whereby the linearly polarized light of the incident light from the polarizing plate is changed to circularly polarized light by the retardation plate, and the light reflected by the reflecting plate is changed to inversely polarized light Circularly polarized light, the result can show the function of anti-reflection. However, in this case, since the light in the infrared light region is continuously maintained in the state of linear polarization, the light is reflected, and the reflected light can be detected. Furthermore, even in the case of this reflection use, by setting the slow axis of the retardation plate to 0°, it functions as a light control device capable of reflecting both light in the visible light region and light in the infrared light region. In the case of the light control device, RD is preferably in the range of 0 to 40 nm, preferably 0 to 25 nm, more preferably 0 to 15 nm, and particularly preferably 0 to 5 nm.

於本發明的光控制裝置的上述IR偏光板中，藉由以吸收軸直交的方式重疊2片前述偏光板時的紅外光區域(700至1400nm的波長)的光的穿透率(紅外光區域的光的直交穿透率)與以吸收軸直交的方式重疊2片前述偏光板時的可見光區域(400至700nm的波長)的光的穿透率(可見光區域的光的直交穿透率)的差為10%以上，可見光區域的光與紅外光區域的光的偏光控制變得更容易，所以較佳。例如偏光板對紅外光區域的光具有偏光性能且對可見光區域的光也具有偏光性能的情況，藉由相位差板可控制各區域的光的偏光，但一片偏光板具有400至1400nm的光的100%的偏光度時，難以只對紅外光區域的光賦 予偏光性能或者只對可見光區域的光賦予偏光性能。相對於此，藉由使用對各波長區域的光具有偏光性能的偏光板，藉由配合波長而選擇適合的偏光板，可在各種波長進行偏光控制。換言之，在紅外光區域中使用只可在紅外光區域的光的波長控制的偏光板，在可見光區域中使用只可在可見光區域的光的波長控制的偏光板，因可在各種波長進行偏光控制或穿透率控制，所以較佳。但是，在紅外光區域具有偏光性能的偏光板，會有在可見光區域也具有偏光性能的情況，故未必只在紅外光區域具有偏光性能。但是，就本發明的光控制裝置的功能而言，因以射出賦予紅外光區域的光與可見光區域的光不同相位(偏光)的光為重要，故若該等的檢測光量(能量)的大小(S/N比)清晰則為充分。所以，於IR偏光板中，不是在全部波長賦予100%的偏光性能，而是藉由以吸收軸直交的方式重疊2片前述偏光板時的700至1400nm的光的穿透率與以吸收軸直交的方式重疊2片前述偏光板時的400至700nm的光的穿透率的差為10%以上，可見光區域的光與紅外光區域的光的偏光控制變得更容易，所以較佳，穿透率的差較佳為20%以上，更佳為30%以上，再更佳為40%以上。 In the above-mentioned IR polarizing plate of the light control device of the present invention, the transmittance (infrared light region) of light in the infrared light region (wavelength of 700 to 1400 nm) when the two polarizing plates are superimposed so that the absorption axes are perpendicular The orthogonal transmittance of light) and the transmittance of light in the visible light region (wavelength of 400 to 700 nm) when two polarizing plates are superimposed so that the absorption axes are orthogonal to each other (orthogonal transmittance of light in the visible light region) A difference of 10% or more is preferable because the polarization control of the light in the visible light region and the light in the infrared light region becomes easier. For example, if the polarizing plate has polarization properties for the light in the infrared region and also has polarization properties for the light in the visible region, the polarization of the light in each region can be controlled by the retardation plate, but a polarizing plate has the light of 400 to 1400nm. When the degree of polarization is 100%, it is difficult to impart polarization properties only to light in the infrared region or to impart polarization properties only to light in the visible region. On the other hand, by using a polarizing plate having polarization performance for light in each wavelength region, and selecting an appropriate polarizing plate in accordance with the wavelength, polarization control can be performed at various wavelengths. In other words, a polarizing plate that can control the wavelength of light only in the infrared region is used in the infrared region, and a polarizing plate that can only control the wavelength of light in the visible region is used in the visible region, because polarization control can be performed at various wavelengths. Or penetration rate control, so it is better. However, a polarizing plate having polarization performance in the infrared light region may also have polarization performance in the visible light region, so it does not necessarily have polarization performance only in the infrared light region. However, in terms of the function of the light control device of the present invention, it is important to emit light having a different phase (polarized light) between the light in the infrared light region and the light in the visible light region. (S/N ratio) clear is sufficient. Therefore, in the IR polarizing plate, instead of imparting 100% polarization performance at all wavelengths, the transmittance of light from 700 to 1400 nm when the two polarizing plates are superimposed so that the absorption axes are perpendicular to each other is compared with the absorption axis. The difference in transmittance of light from 400 to 700 nm when two polarizing plates are stacked in an orthogonal manner is 10% or more, and the polarization control of light in the visible light region and light in the infrared light region becomes easier. The difference in transmittance is preferably 20% or more, more preferably 30% or more, and still more preferably 40% or more.

包括在紅外光區域的光的波長範圍中直交穿透率為1%以下的IR偏光板與在紅外光區域的光的波長範圍不具有光的吸收且偏光板的直交穿透率顯示1%以下的至少1個VIS偏光板之光控制裝置，因可分別控制對紅外光區域的光的偏光性能及對可見光區域的光的偏光性 能，所以較佳。再者，上述光控制裝置，因分別提高紅外光區域的光與可見光區域的光的對比，所以較佳。而且，亦可將各偏光板使用在不同軸，各偏光的欲進行軸控制的波長，在波長軸，可分成可見光區域的光與紅外光區域的光而進行光控制。紅外光區域的光與可見光區域的光各自的直交穿透率分別獨立地為1%以下，藉此可充分地進行光控制，但較佳為0.3%以下，更佳為0.1%以下，再更佳為0.01%以下，特佳為0.005%以下。例如，於平行穿透率為40%的情況，直交穿透率設為0.1%時，其比例為40：0.1，換言之可提供400：1的對比度。換言之，偏光板的對比對本發明的光學控制裝置的影響大，故以控制於上述範圍較佳。 Including an IR polarizing plate with an orthogonal transmittance of 1% or less in the wavelength range of light in the infrared light region and a wavelength range of light in the infrared light region that does not absorb light and the polarizing plate exhibits an orthogonal transmittance of 1% or less. The light control device of at least one VIS polarizing plate is preferable because it can separately control the polarization performance of light in the infrared light region and the polarization performance of light in the visible light region. Furthermore, the above-mentioned light control device is preferable because the contrast between the light in the infrared light region and the light in the visible light region is improved, respectively. In addition, each polarizing plate can be used on different axes, and the wavelength of each polarized light to be axially controlled can be divided into visible light region light and infrared light region light on the wavelength axis to perform light control. The respective orthogonal transmittances of the light in the infrared light region and the light in the visible light region are independently 1% or less, whereby sufficient light control can be performed, but preferably 0.3% or less, more preferably 0.1% or less, and even more Preferably, it is 0.01% or less, and particularly preferably, it is 0.005% or less. For example, in the case of a parallel transmittance of 40%, when the orthogonal transmittance is set to 0.1%, the ratio is 40:0.1, in other words, a contrast ratio of 400:1 can be provided. In other words, the contrast of the polarizing plate has a great influence on the optical control device of the present invention, so it is better to control it within the above range.

關於本發明的光控制裝置之紅外光區域的光與可見光區域的光的控制，就其穿透/不穿透(遮光)的切換時所需要的光量的對比而言，必須為一般紙媒體之對比的比率。換言之，穿透與遮光的對比度若為10比1以上，較佳為100比1以上，再更佳為1000比1以上即可。 Regarding the control of the light in the infrared light region and the light in the visible light region of the light control device of the present invention, in terms of the comparison of the amount of light required for the switching of transmission/non-transmission (light shielding), it is necessary to use a general paper medium. contrast ratio. In other words, if the contrast ratio between penetration and light shielding is 10:1 or more, preferably 100:1 or more, and more preferably 1000:1 or more.

建構上述光控制裝置時，較佳係IR偏光板的至少1個為吸收型偏光板。上述吸收型偏光板，具有不產生雜散光的特徵。前述IR偏光板一般為線柵型，但在控制光的折射、反射等而顯現偏光功能的偏光板的情況，藉由散射光、聚光、明暗激烈的物體、不特定形狀、光重疊、光的位置移動者等的狀況等所致之光的反射、折射、共振、相位調變等，而顯現原本的波長以外的光、強度的光。於 該情況，原本的波長以外的光、強度的光變成雜散光。為了防止誤檢測，重要的是使如此的雜散光不會產生。換言之，較佳係使用不會產生雜散光的偏光板。例如，於IR偏光板為吸收型偏光板的情況，因不易有雜散光等而容易進行光學控制，故可較佳使用。 When constructing the above-mentioned light control device, it is preferable that at least one of the IR polarizers is an absorption-type polarizer. The above-mentioned absorption-type polarizing plate is characterized in that no stray light is generated. The above-mentioned IR polarizing plate is generally a wire grid type, but in the case of a polarizing plate that controls the refraction, reflection, etc. of light and exhibits a polarizing function, it is caused by scattered light, condensed light, intense light and dark objects, unspecified shapes, light overlapping, light Reflection, refraction, resonance, phase modulation, etc. of light due to the situation of a person moving in a position, etc., and the like, and light of a wavelength other than the original wavelength and light of intensity are displayed. In this case, light with a wavelength other than the original wavelength or light with an intensity becomes stray light. In order to prevent false detection, it is important that such stray light does not occur. In other words, it is preferable to use a polarizing plate that does not generate stray light. For example, in the case where the IR polarizing plate is an absorption type polarizing plate, it is easy to perform optical control because stray light and the like are less likely to occur, so it can be preferably used.

上述各偏光板容易積層且能夠可撓化，為了可撓化，較佳係IR偏光板的至少一個為膜。特別是因可積層，故以與具有相位的介質或可控制相位的介質積層為較佳。藉由積層，不易引起因界面反射等的影響所致之穿透率降低，就進行光控制而言較佳。 Each of the above-mentioned polarizing plates is easy to laminate and can be flexible. For flexibility, at least one of the IR polarizing plates is preferably a film. In particular, it is preferable to laminate with a medium having a phase or a phase-controllable medium because it can be laminated. By lamination, it is difficult to cause a decrease in transmittance due to the influence of interface reflection and the like, which is preferable for light control.

而且，上述各偏光板、具有相位的介質或可控制相位的介質，可分別藉由光、電等的訊號而使其旋轉，並各別設定為所期望的角度，或改變設定。 In addition, each of the above-mentioned polarizers, phase-having media, or phase-controllable media can be rotated by signals such as light, electricity, and the like, and can be set to a desired angle, or the setting can be changed.

上述光控制裝置，對於紅外光區域的光與可見光區域的光可同時控制各偏光，故可分別同時控制人眼可辨識的可見光區域的光及辨識困難的紅外光區域的光的偏光。所以，可將上述光控制裝置應用在可切換對紅外光區域的光與可見光區域的光的檢測之液晶顯示裝置、可控制紅外光區域的光與可見光區域的光的偏光的攝影機等攝影裝置、可提供高度保全的防偽裝置或分別在紅外光區域的光與可見光區域的光發揮功能的感測器等各種用途，亦可使用來作為將各種用途與光控制裝置組合而成的系統。 The above-mentioned light control device can simultaneously control the polarizations of light in the infrared light region and light in the visible light region, so that the light in the visible light region that can be recognized by the human eye and the polarization of light in the infrared light region that is difficult to recognize can be simultaneously controlled. Therefore, the above-mentioned light control device can be applied to a liquid crystal display device that can switch detection of light in the infrared region and light in the visible region, a photographing device such as a camera that can control the polarization of light in the infrared region and light in the visible region, and the like, It can be used in various applications such as a high-security anti-counterfeiting device or a sensor that functions separately in the infrared light region and the visible light region. It can also be used as a system combining various applications with a light control device.

〈實施例〉 <Example>

以下，藉由實施例，更詳細地說明本發明，但本發明不限於該等例。 Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples.

〈對紅外光區域的光具有偏光性能的偏光板(IR偏光板)的製作〉 <Production of a polarizing plate (IR polarizing plate) with polarization properties for light in the infrared region>

準備下述化學式(1)的偶氮化合物為0.3%的濃度及芒硝為0.1%的濃度之45℃的水溶液，作為染色液。於該染色液中，浸漬厚度75μm的聚乙烯醇膜5分鐘。然後將該膜在3%硼酸水溶液的50℃溶液中延伸至5倍，持續保持緊繃狀態，進行水洗、乾燥，得到偏光元件。於該偏光元件的兩面隔著聚乙烯醇水溶液的接著劑而積層經鹼處理所得之三乙醯基纖維素膜(TAC膜；FUJIFILM公司製；商品名TD-80U)，得到以835nm為中心具有高偏光功能的偏光板。使用該偏光板作為IR偏光板。 The 45 degreeC aqueous solution of the azo compound of the following chemical formula (1) whose concentration is 0.3% and the mirabilite concentration of 0.1% was prepared as a dyeing solution. In this dyeing solution, a polyvinyl alcohol film having a thickness of 75 μm was immersed for 5 minutes. Then, the film was stretched to 5 times in a 50° C. solution of a 3% boric acid aqueous solution, kept in a taut state, washed with water, and dried to obtain a polarizing element. A triacetyl cellulose film (TAC film; manufactured by FUJIFILM Corporation; trade name TD-80U) obtained by alkali treatment was laminated on both surfaces of the polarizing element through an adhesive of an aqueous polyvinyl alcohol solution, and a film having a center of 835 nm was obtained. Polarizing plate with high polarizing function. This polarizing plate was used as an IR polarizing plate.

Figure 107118962-A0202-12-0023-1
Figure 107118962-A0202-12-0023-1

〈對可見光區域的光具有偏光性能的偏光板(VIS偏光板)的製作〉 <Production of a polarizing plate (VIS polarizing plate) with polarization properties for light in the visible region>

準備Kayarus Supra Orange 2GL(日本化藥股份有限公司製)為0.02%的濃度、C.I.直接紅81為0.01%的濃度、Blue KW(日本化藥股份有限公司製)為0.04%的濃度及芒硝為0.1%的濃度之45℃的水溶液，作為染色液。於該染色液中，浸漬厚度75μm的聚乙烯醇膜3分30秒。然後 將該膜在3%硼酸水溶液的50℃溶液中延伸至5倍，持續保持緊繃狀態，進行水洗、乾燥，得到偏光元件。於該偏光元件的兩面隔著聚乙烯醇水溶液的接著劑而積層經鹼處理所得之三乙醯基纖維素膜(TAC膜；FUJIFILM公司製；商品名TD-80U)，得到在400至650nm的可見光區域具有偏光功能的偏光板。使用該偏光板作為VIS偏光板。 Prepare Kayarus Supra Orange 2GL (manufactured by Nippon Kayaku Co., Ltd.) at a concentration of 0.02%, C.I. Direct Red 81 at a concentration of 0.01%, Blue KW (manufactured by Nippon Kayaku Co., Ltd.) at a concentration of 0.04%, and thenardite at a concentration of 0.1% % concentration of 45 ℃ aqueous solution, as a dyeing solution. In this dyeing solution, a polyvinyl alcohol film having a thickness of 75 μm was immersed for 3 minutes and 30 seconds. Then, the film was stretched 5 times in a 50°C solution of a 3% boric acid aqueous solution, kept in a taut state, washed with water, and dried to obtain a polarizing element. A triacetin-based cellulose film (TAC film; manufactured by FUJIFILM; trade name TD-80U) obtained by alkali treatment was laminated on both surfaces of the polarizing element via an adhesive of an aqueous polyvinyl alcohol solution to obtain a 400 to 650 nm film. A polarizing plate with a polarizing function in the visible light region. This polarizing plate was used as a VIS polarizing plate.

〈可控制紅外光區域的光與可見光區域的光的偏光板(VIS-IR偏光板)的製作〉 <Production of a polarizing plate (VIS-IR polarizing plate) that can control light in the infrared region and light in the visible region>

準備上述化學式(1)的偶氮化合物為0.6%的濃度、Kayarus Supra Orange 2GL(日本化藥股份有限公司製)為0.02%的濃度、C.I.直接紅81為0.01%的濃度、Blue KW(日本化藥股份有限公司製)為0.04%的濃度及芒硝為0.1%的濃度之45℃的水溶液，作為染色液。於該染色液中，浸漬厚度75μm的聚乙烯醇膜5分鐘。然後將該膜在3%硼酸水溶液的50℃溶液中延伸至5倍，持續保持緊繃狀態，進行水洗、乾燥，得到偏光元件。於該偏光元件的兩面隔著聚乙烯醇水溶液的接著劑而積層經鹼處理所得之三乙醯基纖維素膜(TAC膜；FUJIFILM公司製；商品名TD-80U)，得到在400至900nm具有偏光功能的偏光板。使用該偏光板作為VIS-IR偏光板。 The azo compound of the above chemical formula (1) was prepared at a concentration of 0.6%, Kayarus Supra Orange 2GL (manufactured by Nippon Kayaku Co., Ltd.) at a concentration of 0.02%, C.I. Direct Red 81 at a concentration of 0.01%, Blue KW (Nihon Kayaku Co., Ltd.) A 45°C aqueous solution with a concentration of 0.04% and Glauber's salt at a concentration of 0.1% (manufactured by Pharma Co., Ltd.) was used as a dyeing solution. In this dyeing solution, a polyvinyl alcohol film having a thickness of 75 μm was immersed for 5 minutes. Then, the film was stretched to 5 times in a 50° C. solution of a 3% boric acid aqueous solution, kept in a taut state, washed with water, and dried to obtain a polarizing element. A triacetin-based cellulose film (TAC film; manufactured by FUJIFILM; trade name TD-80U) obtained by alkali treatment was laminated on both surfaces of the polarizing element via an adhesive of an aqueous polyvinyl alcohol solution to obtain a film having a thickness of 400 to 900 nm. Polarizing plate with polarizing function. This polarizing plate was used as a VIS-IR polarizing plate.

〈偏光元件的穿透率的測定〉 <Measurement of transmittance of polarizing element>

(偏光板的穿透率測定) (Transmittance measurement of polarizing plate)

對於所得之各偏光板，使用分光光度計(日立製作所製U-4100)，在380至1100nm，測定各波長的單體穿透率 (Ts)、平行穿透率(Tp)、直交穿透率(Tc)、偏光度(ρ)。所謂單體穿透率(Ts)係指測定一片偏光板所得之穿透率，所謂平行穿透率(Tp)係指將2片偏光板各自的光的吸收軸平行並測定而得之穿透率，所謂直交穿透率(Tc)係指將2片偏光板各自的光的吸收軸直交並測定而得之穿透率，偏光度係由數學式(7)計算所得之值。 For each of the obtained polarizing plates, a spectrophotometer (U-4100 manufactured by Hitachi, Ltd.) was used to measure the single transmittance (Ts), parallel transmittance (Tp), and orthogonal transmittance of each wavelength at 380 to 1100 nm. (Tc), degree of polarization (ρ). The so-called single transmittance (Ts) refers to the transmittance obtained by measuring one polarizing plate, and the so-called parallel transmittance (Tp) refers to the penetration obtained by measuring the light absorption axes of two polarizing plates in parallel. The so-called orthogonal transmittance (Tc) refers to the transmittance obtained by measuring the absorption axes of the two polarizing plates at right angles to each other, and the degree of polarization is the value calculated by the mathematical formula (7).

偏光度(%)=100×[(Tp-Tc)/(Tp+Tc)]1/2 數學式(7) Degree of polarization (%)=100×[(Tp-Tc)/(Tp+Tc)] 1/2 Mathematical formula (7)

將所得之各偏光板的在420nm、555nm、830nm、840nm的波長之單體穿透率(Ts)、平行穿透率(Tp)、直交穿透率(Tc)表示於下。於表1表示使用IR偏光板時的值，於表2表示使用VIS偏光板時的值，於表3表示使用VIS-IR偏光板時的值。 The single transmittance (Ts), parallel transmittance (Tp), and orthogonal transmittance (Tc) at wavelengths of 420 nm, 555 nm, 830 nm, and 840 nm of each of the obtained polarizing plates are shown below. Table 1 shows the values when using the IR polarizing plate, Table 2 shows the values when using the VIS polarizing plate, and Table 3 shows the values when using the VIS-IR polarizing plate.

Figure 107118962-A0202-12-0025-2
Figure 107118962-A0202-12-0025-2

Figure 107118962-A0202-12-0025-3
Figure 107118962-A0202-12-0025-3

Figure 107118962-A0202-12-0026-4
Figure 107118962-A0202-12-0026-4

〈實施例A1至A4〉 <Examples A1 to A4>

光控制裝置的製作、評估 Fabrication and evaluation of light control devices

將從上述U-4100的光源部射出的光照射於光控制裝置並使穿透的光入射U-4100的檢測部，該光控制裝置從光源側來看依序為VIS-IR偏光板、相位差板、VIS偏光板、IR偏光板的構成。使用在420nm及840nm的各波長中顯示420nm的相位差值的聚碳酸酯系相位差板作為相位差板。測定該相位差板的慢軸相對於VIS-IR偏光板而言傾斜0°及45°時的穿透率。此時，將VIS偏光板、IR偏光板各自的偏光軸進行各種改變並測定。將結果表示於表4。表4的0°係指相對於VIS-IR偏光板的吸收軸而言，若為相位差板時則慢軸設置為0°，若為VIS偏光板或IR偏光板時則吸收軸設置為0°(同軸)。45°及90°也相同。所謂St係指由U-4100檢測的穿透率為強(30至50%)，所謂Mi係指由U-4100檢測的穿透率為中(10至25%)，所謂We係指由U-4100檢測的穿透率為弱(0至2%)。 The light emitted from the light source part of the U-4100 is irradiated to the light control device, and the transmitted light is incident on the detection part of the U-4100. The light control device is VIS-IR polarizing plate, phase The structure of the difference plate, the VIS polarizer, and the IR polarizer. As the retardation plate, a polycarbonate-based retardation plate showing a retardation value of 420 nm at each wavelength of 420 nm and 840 nm was used. The transmittance when the slow axis of the retardation plate was inclined at 0° and 45° with respect to the VIS-IR polarizing plate was measured. At this time, the polarization axis of each of the VIS polarizing plate and the IR polarizing plate was variously changed and measured. The results are shown in Table 4. 0° in Table 4 refers to the absorption axis of the VIS-IR polarizer. If it is a retardation plate, the slow axis is set to 0°, and if it is a VIS polarizer or an IR polarizer, the absorption axis is set to 0 ° (coaxial). The same applies to 45° and 90°. The so-called St means the penetration rate detected by U-4100 is strong (30 to 50%), the so-called Mi means the penetration rate detected by U-4100 is medium (10 to 25%), the so-called We means the penetration rate detected by U-4100 -4100 detects weak penetration (0 to 2%).

Figure 107118962-A0202-12-0027-5
Figure 107118962-A0202-12-0027-5

〈實施例A5至A8〉 <Examples A5 to A8>

除了使用在420nm及840nm的各波長中顯示210nm的相位差值的聚碳酸酯系相位差板以外，以與實施例1至4同樣地評估光控制裝置。將結果表示於表5。 The light control device was evaluated in the same manner as in Examples 1 to 4, except that a polycarbonate-based retardation plate having a retardation value of 210 nm was used at each wavelength of 420 nm and 840 nm. The results are shown in Table 5.

Figure 107118962-A0202-12-0027-6
Figure 107118962-A0202-12-0027-6

〈實施例A9至A12〉 <Examples A9 to A12>

除了使用在555nm及830nm的各波長中顯示415nm的相位差值的聚碳酸酯系相位差板以外，以與實施例1至4同樣地評估光控制裝置。將結果表示於表6。 The light control device was evaluated in the same manner as in Examples 1 to 4, except that a polycarbonate-based retardation plate showing a retardation value of 415 nm at each wavelength of 555 nm and 830 nm was used. The results are shown in Table 6.

Figure 107118962-A0202-12-0028-7
Figure 107118962-A0202-12-0028-7

〈實施例A 13至A14〉 <Examples A13 to A14>

將從上述U-4100的光源部射出的光照射於光控制裝置並使其反射光入射U-4100的檢測部，該光控制裝置從光源側來看依序為VIS偏光板、IR偏光板、相位差板、反射板的構成。使用在420nm及840nm的各波長中顯示210nm的相位差值的聚碳酸酯系相位差板作為相位差板。測定該相位差板的慢軸相對於VIS偏光板而言傾斜0°及45°時的穿透率。此時，將IR偏光板的各偏光軸進行各種改變並測定。將結果表示於表7。表7的0°係指相對於VIS偏光板的吸收軸而言，若為相位差板時則慢軸設置為0°，若為IR偏光板時則吸收軸設置為0°(同軸)。45°及90°也相同。St、(Mi)及We表示與表4相同的意義。 The light emitted from the light source part of the U-4100 is irradiated on the light control device, and the reflected light is incident on the detection part of the U-4100. The light control device is VIS polarizing plate, IR polarizing plate, The structure of retardation plate and reflector. As the retardation plate, a polycarbonate-based retardation plate showing a retardation value of 210 nm at each wavelength of 420 nm and 840 nm was used. The transmittance when the slow axis of the retardation plate was inclined at 0° and 45° with respect to the VIS polarizing plate was measured. At this time, each polarization axis of the IR polarizing plate was variously changed and measured. The results are shown in Table 7. 0° in Table 7 means relative to the absorption axis of the VIS polarizer. In the case of a retardation plate, the slow axis is set to 0°, and in the case of an IR polarizer, the absorption axis is set to 0° (coaxial). The same applies to 45° and 90°. St, (Mi) and We have the same meanings as in Table 4.

Figure 107118962-A0202-12-0029-8
Figure 107118962-A0202-12-0029-8

〈實施例A15至A16〉 <Examples A15 to A16>

將從上述U-4100的光源部射出的光照射於光控制裝置並使其反射光入射U-4100的檢測部，該光控制裝置從光源側來看依序為VIS偏光板、IR偏光板、相位差板、反射板的構成。使用在555nm及830nm的各波長中顯示415nm的相位差值的聚碳酸酯系相位差板作為相位差板。測定該相位差板的慢軸相對於VIS偏光板而言傾斜0°及45°時的穿透率。此時，將IR偏光板的各偏光軸進行各種改變並測定。將結果表示於表8。表8的0°、45°、90°、St、(Mi)及We表示與表7相同的意義。 The light emitted from the light source part of the U-4100 is irradiated on the light control device, and the reflected light is incident on the detection part of the U-4100. The light control device is VIS polarizing plate, IR polarizing plate, The structure of retardation plate and reflector. A polycarbonate-based retardation plate having a retardation value of 415 nm at each wavelength of 555 nm and 830 nm was used as the retardation plate. The transmittance when the slow axis of the retardation plate was inclined at 0° and 45° with respect to the VIS polarizing plate was measured. At this time, each polarization axis of the IR polarizing plate was variously changed and measured. The results are shown in Table 8. 0°, 45°, 90°, St, (Mi), and We in Table 8 have the same meanings as in Table 7.

Figure 107118962-A0202-12-0029-9
Figure 107118962-A0202-12-0029-9

〈比較例A1至A4〉 <Comparative Examples A1 to A4>

將使用從實施例A1至A4除去相位差板的光控制裝置(比較例1至4)測定穿透率的結果表示於表9。與傳統的偏光板相同地，為在各波長中偏光板的吸收軸若為直交的狀 態則穿透率降低，吸收軸若為平行則穿透率變高的結果。只有屬於傳統的偏光板的功能之可控制平行位與直交位的穿透率，而無法成為可個別控制在各波長的穿透率的光學裝置。 Table 9 shows the results of measuring the transmittance using the optical control device (Comparative Examples 1 to 4) in which the retardation plate was removed from Examples A1 to A4. Similar to the conventional polarizing plate, the transmittance decreases when the absorption axes of the polarizing plate are orthogonal at each wavelength, and the transmittance increases when the absorption axes are parallel. Only the function of the traditional polarizer can control the transmittance of the parallel position and the orthogonal position, and it cannot be an optical device that can individually control the transmittance at each wavelength.

Figure 107118962-A0202-12-0030-10
Figure 107118962-A0202-12-0030-10

〈比較例A5至A6〉 <Comparative Examples A5 to A6>

將使用從實施例A13至A14除去相位差板的光控制裝置(比較例5至6)測定穿透率的結果表示於表10。與將傳統的1片偏光板放置於鏡子上時相同地，完全沒有看到穿透率的變化，入射光在可見光區域的光與紅外光區域的光沒有看到變化。 Table 10 shows the results of measuring the transmittance using the optical control device (Comparative Examples 5 to 6) in which the retardation plate was removed from Examples A13 to A14. Similar to placing a conventional polarizing plate on a mirror, no change in transmittance was seen at all, and no change was seen between incident light in the visible light region and light in the infrared light region.

Figure 107118962-A0202-12-0030-11
Figure 107118962-A0202-12-0030-11

從實施例A1至A12的結果，得知於各光控制裝置中，對於相同的光源，可分別控制紅外光區域的光與可見光區域的光的量。而且，於實施例A5至A8與實施例A13至A14以及實施例A9至A12與實施例A15至A16中，得知藉由光穿透時的光控制所致的結果與藉由反射時 的光控制所得的結果不同。由以上的結果顯示，本發明所得之光控制裝置，作為即使在使用具有可見光區域的光與紅外光區域的光之相同光源的情況，仍可將可見光區域的光與紅外光區域的光分別改變為不同的光量及偏光的裝置而言為有效。 From the results of Examples A1 to A12, it is known that in each light control device, for the same light source, the amounts of light in the infrared light region and light in the visible light region can be controlled separately. Furthermore, in Examples A5 to A8 and Examples A13 to A14 and Examples A9 to A12 and Examples A15 to A16, it is known that the results by light control when light penetrates and the light by reflection Controls yielded different results. From the above results, it is shown that the light control device obtained by the present invention can change the light of the visible light region and the light of the infrared light region respectively even when the same light source having the light of the visible light region and the light of the infrared light region is used. It is effective for devices with different light intensity and polarization.

〈實施例B1〉 <Example B1>

將從上述U-4100的光源部射出的光照射於光控制裝置並使穿透的光入射U-4100的檢測部，該光控制裝置從光源側來看依序為VIS-IR偏光板、STN型液晶胞、VIS偏光板、IR偏光板的構成。此時，以使VIS偏光板的吸收軸相對於VIS-IR偏光板的吸收軸而言平行之方式積層，以使IR偏光板的吸收軸相對於VIS-IR偏光板的吸收軸而言成90°之方式積層並使用。關於對液晶胞的貼合，使用以在施加電壓於STN胞時可見光區域成為最低穿透率之方式貼合各偏光板而成者作為本案的測定樣品。STN型液晶胞係使用施加電壓時以當將初期的軸設為0°時在45°方向具有慢軸之方式配置，且其相位差在420nm及840nm的各波長中具有會成為1/2 λ的相位者。此時，將使電壓為ON、OFF時的420nm波長與840nm波長各自的光的測定結果表示於表11。根據只有設置VIS-IR偏光板並穿透其的光量，來表示穿透上述光控制裝置後，入射U-4100的檢測部時的光量(%)。 The light emitted from the light source part of the U-4100 is irradiated to the light control device, and the transmitted light enters the detection part of the U-4100. The light control device is VIS-IR polarizing plate, STN in this order from the light source side. Type of liquid crystal cell, VIS polarizer, IR polarizer. At this time, the layers are stacked so that the absorption axis of the VIS polarizer is parallel to the absorption axis of the VIS-IR polarizer so that the absorption axis of the IR polarizer is 90° with respect to the absorption axis of the VIS-IR polarizer. ° way to layer and use. Regarding the bonding to the liquid crystal cell, what was obtained by bonding each polarizing plate so that the visible light region would have the lowest transmittance when a voltage was applied to the STN cell was used as a measurement sample of the present case. The STN-type liquid crystal cell is arranged so as to have a slow axis in the 45° direction when the initial axis is set to 0° when a voltage is applied, and the retardation becomes 1/2 λ at each wavelength of 420 nm and 840 nm. the phaser. At this time, Table 11 shows the measurement results of light with a wavelength of 420 nm and a wavelength of 840 nm when the voltage was turned ON and OFF. The amount of light (%) that enters the detection portion of the U-4100 after passing through the above-mentioned light control device is expressed in terms of the amount of light that passes through only the VIS-IR polarizing plate.

〈實施例B2〉 <Example B2>

將從上述U-4100的光源部射出的光照射於光控制裝 置並使穿透的光入射U-4100的檢測部，該光控制裝置從光源側來看依序為VIS-IR偏光板、STN型液晶胞、VIS偏光板、IR偏光板的構成。此時，以使VIS偏光板的吸收軸相對於VIS-IR偏光板的吸收軸而言直交之方式積層，以使IR偏光板的吸收軸相對於VIS-IR偏光板的吸收軸而言成0°之方式積層並使用。關於對液晶胞的貼合，使用以在不施加電壓於STN胞時可見光區域成為最低穿透率之方式貼合各偏光板而成者作為本案的測定樣品。STN型液晶胞係使用施加電壓時，以當將初期的軸設為0°時在45°方向具有慢軸之方式配置，且其相位差在420nm及840nm的各波長中具有會成為1/2 λ的相位者。此時，將使電壓為ON、OFF時的420nm波長與840nm波長各自的光的測定結果表示於表11。根據只有設置VIS-IR偏光板並穿透其的光量，來表示穿透上述光控制裝置後，入射U-4100的檢測部時的光量(%)。 The light emitted from the light source part of the U-4100 is irradiated to the light control device, and the transmitted light enters the detection part of the U-4100. The light control device is VIS-IR polarizing plate, STN in this order from the light source side. Type of liquid crystal cell, VIS polarizer, IR polarizer. At this time, the layers are stacked so that the absorption axis of the VIS polarizer is perpendicular to the absorption axis of the VIS-IR polarizer so that the absorption axis of the IR polarizer becomes 0 with respect to the absorption axis of the VIS-IR polarizer. ° way to layer and use. Regarding the bonding to the liquid crystal cell, when no voltage is applied to the STN cell, the polarizing plate bonded together so that the visible light region has the lowest transmittance is used as the measurement sample of the present case. When an STN-type liquid crystal cell is used with an applied voltage, it is arranged so as to have a slow axis in the 45° direction when the initial axis is set to 0°, and the retardation becomes 1/2 at each wavelength of 420 nm and 840 nm. Phaser of λ. At this time, Table 11 shows the measurement results of light with a wavelength of 420 nm and a wavelength of 840 nm when the voltage was turned ON and OFF. The amount of light (%) that enters the detection portion of the U-4100 after passing through the above-mentioned light control device is expressed in terms of the amount of light that passes through only the VIS-IR polarizing plate.

〈實施例B3〉 <Example B3>

將從上述U-4100的光源部射出的光從光源側來看依序入射VIS偏光板、IR偏光板、STN型液晶胞、反射板，並使反射光入射U-4100的檢測部。IR偏光板係以相對於VIS偏光板的吸收軸而言成45°之方式貼合，關於對液晶胞的貼合，使用以在對STN胞不施加電壓時紅外光區域成為最低反射率之方式貼合各偏光板而成者作為本案的測定樣品。STN型液晶胞係使用施加電壓時以當將初期的軸設為0°時在45°方向具有慢軸之方式配置，且其相位差在420nm 及840nm的各波長中具有會成為1/4 λ的相位者。此時，將使電壓為ON、OFF時的420nm波長與840nm波長各自的光的測定結果表示於表11。根據只有設置VIS-IR偏光板及反射板並從其反射的光量，來表示從上述光控制裝置反射後，入射U-4100的檢測部時的光量(%)。 The light emitted from the light source unit of the U-4100 is incident on the VIS polarizer, IR polarizer, STN type liquid crystal cell, and reflector in this order from the light source side, and the reflected light is incident on the detection unit of the U-4100. The IR polarizing plate is bonded at 45° with respect to the absorption axis of the VIS polarizing plate, and the bonding to the liquid crystal cell is used so that the infrared light region has the lowest reflectance when no voltage is applied to the STN cell. The one obtained by bonding each polarizing plate was used as the measurement sample of this case. STN-type liquid crystal cells are arranged so as to have a slow axis in the direction of 45° when the initial axis is set to 0° when a voltage is applied, and the retardation becomes 1/4 λ at each wavelength of 420 nm and 840 nm. the phaser. At this time, Table 11 shows the measurement results of light with a wavelength of 420 nm and a wavelength of 840 nm when the voltage was turned ON and OFF. The amount of light (%) when reflected from the above-mentioned light control device and incident on the detection portion of the U-4100 is represented by the amount of light reflected from only the VIS-IR polarizing plate and the reflecting plate.

〈實施例B4〉 <Example B4>

作為光控制裝置的評估，將從上述U-4100的光源部射出的光，以從光源側來看為VIS-IR偏光板、TN型液晶胞、VIS偏光板、IR偏光板的構成，入射U-4100的檢測部。此時，以使VIS偏光板的吸收軸相對於VIS-IR偏光板的吸收軸而言平行之方式積層，以使IR偏光板的吸收軸相對於VIS-IR偏光板的吸收軸而言成90°之方式積層並使用。關於對液晶胞的貼合，使用以在施加電壓於TN胞時，藉由紅外光用偏光板使紅外光區域穿透率成為最低之方式貼合偏光板而成者作為本案的測定樣品。此時，將使電壓為ON、OFF時的420nm波長與840nm波長各自的光的結果表示於表11。結果係根據只有設置VIS-IR偏光板並穿透其的光量，來表示穿透上述光控制裝置後，入射U-4100的檢測部時的光量(%)。 As an evaluation of the light control device, the light emitted from the light source unit of the U-4100 described above was incident on U-IR polarizer, TN-type liquid crystal cell, VIS polarizer, and IR polarizer as viewed from the light source side. -4100 detection section. At this time, the layers are stacked so that the absorption axis of the VIS polarizer is parallel to the absorption axis of the VIS-IR polarizer so that the absorption axis of the IR polarizer is 90° with respect to the absorption axis of the VIS-IR polarizer. ° way to layer and use. Regarding bonding to a liquid crystal cell, when a voltage is applied to a TN cell, a polarizing plate is used as a measurement sample of the present case so that the infrared light region transmittance is minimized by the polarizing plate for infrared light. At this time, Table 11 shows the results of light with a wavelength of 420 nm and a wavelength of 840 nm when the voltage was turned ON and OFF. The results represent the amount of light (%) that enters the detection portion of the U-4100 after passing through the above-mentioned light control device, based on the amount of light that passes through only the VIS-IR polarizing plate.

Figure 107118962-A0202-12-0033-12
Figure 107118962-A0202-12-0033-12

由實施例B1至B4的結果得知，於各光控制裝置中，在使用相同的光源的同時可分別獨立且動態地控制紅外光區域的光及可見光區域的光的量。特別是由實施例B1及B2，得知藉由對於穿透時的可見光區域的光與紅外光區域的光之光控制，亦即藉由動態顯現相位的介質，可切換可見光區域的光與紅外光區域的光的穿透率。而且，由實施例B3，得知即使在使用反射板的情況，上述光控制裝置的光控制仍為有效。由以上的結果顯示，本發明所得之光控制裝置，作為即使在使用相同的光源的情況，仍可簡易地切換並控制可見光區域的光與紅外光區域的光各別的穿透率的裝置而言為有效。 It can be seen from the results of Examples B1 to B4 that in each light control device, the amount of light in the infrared light region and light in the visible light region can be independently and dynamically controlled while using the same light source. Especially from Examples B1 and B2, it is known that the light in the visible light region and the infrared light region can be switched by the light control of the light in the visible light region and the light in the infrared light region when penetrating, that is, through a medium that dynamically displays the phase. The transmittance of light in the light area. Furthermore, from Example B3, it was found that the light control of the above-mentioned light control device is effective even when a reflector is used. From the above results, it is shown that the light control device obtained by the present invention can easily switch and control the transmittances of light in the visible light region and light in the infrared light region even when the same light source is used. Words are valid.

[產業上的可利用性] [Industrial Availability]

可控制入射的紅外光區域波長的光及可見光區域波長的光的偏光同時分別成為不同的偏光而可應用於可切換對紅外光區域的光及可見光區域的光之檢測的液晶顯示裝置、可控制紅外光區域的光及可見光區域的光的偏光的攝影機等攝影裝置、可提供高度保全的防偽裝置或分別在紅外光區域的光與可見光區域的光發揮功能的感測器等各種用途。 It can control the polarization of incident light with wavelengths in the infrared light region and the wavelengths in the visible light region into different polarizations at the same time, and can be applied to a liquid crystal display device that can switch detection of light in the infrared light region and light in the visible light region. Controllable Various applications such as imaging devices such as cameras that polarize light in the infrared region and light in the visible region, anti-counterfeiting devices that provide high security, and sensors that function separately for light in the infrared region and visible region.

Claims (17)

一種光控制裝置，係包括對紅外光區域的光具有偏光性能的至少一個偏光板(IR偏光板)、對可見光區域的光具有偏光性能的至少一個偏光板(VIS偏光板)、對可見光區域的光與紅外光區域的光具有偏光性能的1個偏光板(VIS-IR偏光板)、及具有相位的介質或可控制相位的介質，其中，藉由使入射的紅外光區域的光與可見光區域的光分別成為不同的偏光的光而控制紅外光區域的穿透光及可見光區域的穿透光。 A light control device, comprising at least one polarizer (IR polarizer) with polarizing properties for light in the infrared region, at least one polarizer (VIS polarizer) with polarizing properties for light in the visible region, and a polarizer for the visible region. A polarizing plate (VIS-IR polarizing plate) having polarizing properties between light and light in the infrared region, and a medium having a phase or a phase-controllable medium, wherein the incident light in the infrared region and the visible light region are The light of different polarized light respectively controls the penetrating light in the infrared light region and the penetrating light in the visible light region. 如申請專利範圍第1項所述之光控制裝置，其中，具有相位的介質或可控制相位的介質之顯示相位差值Rλ時的角度與在紅外光區域顯現直線偏光時的角度之間的角度θi為0≦θi<180°的範圍。 The light control device according to claim 1, wherein the angle between the angle at which the phase-having medium or the phase-controllable medium exhibits the phase difference value Rλ and the angle at which linearly polarized light appears in the infrared region θi is in the range of 0≦θi<180°. 如申請專利範圍第1項所述之光控制裝置，其中，具有相位的介質或可控制相位的介質之顯示相位差值Rλ的角度與在可見光區域顯現直線偏光時的角度之間的角度θv為-90°<θv<180°的範圍。 The light control device according to claim 1, wherein the angle θv between the angle at which the phase-having medium or the phase-controllable medium exhibits the phase difference value Rλ and the angle at which linearly polarized light appears in the visible light region is: -90°<θv<180° range. 如申請專利範圍第1項至第3項中任一項所述之光控制裝置，其中，在將紅外光區域的光的波長設為Iλ、可見光區域的光的波長設為Vλ、相位差值的誤差設為RD、具有相位的介質或可控制相位的介質的相位差值設為Rλ的情況，分別滿足下述數學式(1)或數學式(2)的關係；Vλ-RD≦Rλ≦Vλ+RD 數學式(1)(但是，RD表示0至40nm) Iλ/2-RD≦Rλ≦Iλ/2+RD 數學式(2)(但是，RD表示0至40nm)。 The light control device according to any one of Claims 1 to 3, wherein the wavelength of light in the infrared region is Iλ, the wavelength of light in the visible region is Vλ, and the retardation value is When the error of RD is set as RD, and the phase difference value of the medium with phase or the medium with controllable phase is set as Rλ, the relationship of the following mathematical formula (1) or mathematical formula (2) is satisfied respectively; Vλ-RD≦Rλ≦ Vλ+RD Mathematical formula (1) (however, RD means 0 to 40nm) Iλ/2-RD≦Rλ≦Iλ/2+RD Mathematical formula (2) (however, RD represents 0 to 40 nm). 如申請專利範圍第1項至第3項中任一項所述之光控制裝置，其中，在將紅外光區域的光的波長設為Iλ、可見光區域的光的波長設為Vλ、相位差值的誤差設為RD、具有相位的介質或可控制相位的介質的相位差值設為Rλ的情況，分別滿足下述數學式(3)或數學式(4)的關係；Vλ/2-RD≦Rλ≦Vλ/2+RD 數學式(3)(但是，RD表示0至40nm)Iλ/4-RD≦Rλ≦Iλ/4+RD 數學式(4)(但是，RD表示0至40nm)。 The light control device according to any one of Claims 1 to 3, wherein the wavelength of light in the infrared region is Iλ, the wavelength of light in the visible region is Vλ, and the retardation value is When the error of RD is set as RD, and the phase difference value of the medium with phase or the medium with controllable phase is set as Rλ, the relationship of the following mathematical formula (3) or mathematical formula (4) is satisfied respectively; Vλ/2-RD≦ Rλ≦Vλ/2+RD Equation (3) (however, RD represents 0 to 40 nm) Iλ/4-RD≦Rλ≦Iλ/4+RD Equation (4) (however, RD represents 0 to 40 nm). 如申請專利範圍第1項至第3項中任一項所述之光控制裝置，其中，在將紅外光區域的光的波長設為Iλ、可見光區域的光的波長設為Vλ、相位差值的誤差設為RD、具有相位的介質或可控制相位的介質的相位差值設為Rλ的情況，分別滿足下述數學式(5)或數學式(6)的關係；Vλ×3/2-RD≦Rλ≦Vλ×3/2+RD 數學式(5)(但是，RD表示0至40nm)Iλ×1/2-RD≦Rλ≦Iλ×1/2+RD 數學式(6)(但是，RD表示0至40nm)。 The light control device according to any one of Claims 1 to 3, wherein the wavelength of light in the infrared region is Iλ, the wavelength of light in the visible region is Vλ, and the retardation value is When the error of RD is set as RD, and the phase difference value of the medium with phase or the medium with controllable phase is set as Rλ, the relationship of the following mathematical formula (5) or mathematical formula (6) is satisfied respectively; Vλ×3/2- RD≦Rλ≦Vλ×3/2+RD Mathematical formula (5) (however, RD means 0 to 40nm) Iλ×1/2-RD≦Rλ≦Iλ×1/2+RD Mathematical formula (6) (however, RD means 0 to 40 nm). 如申請專利範圍第1項至第3項中任一項所述之光控制裝置，其係用以同時控制可見光區域的光與紅外光區域的光，其中，前述可控制相位的介質為可動態控制相位的介質。 The light control device according to any one of items 1 to 3 of the scope of the application, which is used for simultaneously controlling the light in the visible light region and the light in the infrared light region, wherein the phase-controllable medium is dynamic The medium that controls the phase. 如申請專利範圍第7項所述之光控制裝置，其中，前述可動態控制相位的介質為液晶面板(液晶胞)。 The light control device according to claim 7, wherein the medium whose phase can be dynamically controlled is a liquid crystal panel (liquid crystal cell). 如申請專利範圍第8項所述之光控制裝置，其中，前述液晶面板(液晶胞)所使用的液晶為扭轉向列型液晶(TN液晶；Twisted Nematic液晶)或超扭轉向列型液晶(STN液晶；Super Twisted Nematic液晶)。 The light control device according to claim 8, wherein the liquid crystal used in the liquid crystal panel (liquid crystal cell) is a twisted nematic liquid crystal (TN liquid crystal; Twisted Nematic liquid crystal) or a super twisted nematic liquid crystal (STN liquid crystal). Liquid Crystal; Super Twisted Nematic Liquid Crystal). 如申請專利範圍第7項所述之光控制裝置，其中，可見光區域的光與紅外光區域的光各自的穿透對不穿透的對比度為10以上。 The light control device according to claim 7, wherein the contrast ratio between transmission and non-transmission of light in the visible light region and light in the infrared light region is 10 or more. 如申請專利範圍第1項所述之光控制裝置，其中，於前述VIS-IR偏光板中，紅外光區域的光的直交穿透率與可見光區域的光的直交穿透率的差為1%以下。 The light control device according to claim 1, wherein, in the VIS-IR polarizing plate, the difference between the orthogonal transmittance of light in the infrared light region and the orthogonal transmittance of light in the visible light region is 1% the following. 如申請專利範圍第1至3項中任一項所述之光控制裝置，其中，於前述IR偏光板中，紅外光區域的光的直交穿透率與可見光區域的光的直交穿透率的差為10%以上。 The light control device according to any one of claims 1 to 3, wherein, in the IR polarizing plate, the orthogonal transmittance of light in the infrared light region and the orthogonal transmittance of light in the visible light region are equal to each other. The difference is more than 10%. 如申請專利範圍第1至3項中任一項所述之光控制裝置，係包括：於前述IR偏光板中紅外光區域的光的直交穿透率為1%以下且與可見光區域的光的穿透率的差為10%以上之偏光板；以及前述VIS偏光板在紅外光區域顯示高穿透率、顯示紅外光區域的光的穿透不易受影響且可見光區域的光的直交穿透率為1%以下的至少1個偏光板。 The light control device according to any one of claims 1 to 3 of the scope of the patent application, comprising: the orthogonal transmittance of light in the infrared light region in the IR polarizing plate is 1% or less and a distance between the light in the visible light region and the A polarizing plate with a transmittance difference of 10% or more; and the aforementioned VIS polarizing plate shows high transmittance in the infrared light region, shows that the penetration of light in the infrared light region is not easily affected, and the orthogonal transmittance of light in the visible light region is At least one polarizing plate with 1% or less. 如申請專利範圍第1至3項中任一項所述之光控制裝 置，其中，前述IR偏光板或前述VIS-IR偏光板為吸收型偏光板。 The light control device as described in any one of items 1 to 3 of the scope of the application set, wherein, the aforementioned IR polarizing plate or the aforementioned VIS-IR polarizing plate is an absorbing polarizing plate. 如申請專利範圍第1至3項中任一項所述之光控制裝置，其中，前述IR偏光板或前述VIS-IR偏光板為膜。 The light control device according to any one of claims 1 to 3, wherein the IR polarizing plate or the VIS-IR polarizing plate is a film. 如申請專利範圍第1至3項中任一項所述之光控制裝置，其係積層有具有相位的介質或可控制相位的介質與至少1個偏光板。 The light control device according to any one of claims 1 to 3 of the claimed scope, wherein a medium having a phase or a medium with controllable phase and at least one polarizing plate are laminated. 一種液晶顯示裝置、防偽裝置或感測器，係具備申請專利範圍第1項至第16項中任一項所述之光控制裝置。 A liquid crystal display device, an anti-counterfeiting device or a sensor, which is provided with the light control device described in any one of items 1 to 16 of the scope of the patent application.
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TW201634463A (en) * 2015-02-27 2016-10-01 Fujifilm Corp Near-infrared-absorbing composition, cured film, near-infrared-absorbing filter, solid-state imaging element, and infrared sensor
JP2017074177A (en) * 2015-10-14 2017-04-20 株式会社 オルタステクノロジー Different wavelength light selection device and endoscopic device using the same

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